87351690 has 32 divisors (see below), whose sum is σ = 212175936. Its totient is φ = 23012480.

The previous prime is 87351659. The next prime is 87351703. The reversal of 87351690 is 9615378.

It is a super-2 number, since 2×87351690² = 15260635491712200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15051 + ... + 20030.

It is an arithmetic number, because the mean of its divisors is an integer number (6630498).

Almost surely, 2^87351690 is an apocalyptic number.

87351690 is an abundant number, since it is smaller than the sum of its proper divisors (124824246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87351690 is a wasteful number, since it uses less digits than its factorization.

87351690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35174.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 87351690 is about 9346.2126019046. The cubic root of 87351690 is about 443.7010303695.

The spelling of 87351690 in words is "eighty-seven million, three hundred fifty-one thousand, six hundred ninety".