Syracuse, New York, had a sparse metropolitan population of three hundred fifty in 2010.
=== 370s ======= 370 ====370 = 2  5  37, sphenic number, sum of four consecutive primes (83 + 89 + 97 + 101), nontotient, with 369 part of a RuthAaron pair with only distinct prime factors counted, Base 10 Armstrong number since 33 to 2023 + 73 + 03 = 370
 330 is sum of six consecutive primes (43 + 47 + 53 + 59 + 61 + 67), pentatope number (and hence a binomial coefficient                                                                         (                                            11                4                                            )                                                          {\displaystyle {\tbinom {11}{4}}}  ), a pentagonal number, divisible by the number of primes below it, and a sparsely totient number

