97915715 has 16 divisors (see below), whose sum is σ = 123121728. Its totient is φ = 74612736.

The previous prime is 97915693. The next prime is 97915723. The reversal of 97915715 is 51751979.

It is not a de Polignac number, because 97915715 - 2⁸ = 97915459 is a prime.

It is a super-2 number, since 2×97915715² = 19174974487922450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27899 + ... + 31211.

It is an arithmetic number, because the mean of its divisors is an integer number (7695108).

Almost surely, 2^97915715 is an apocalyptic number.

97915715 is a deficient number, since it is larger than the sum of its proper divisors (25206013).

97915715 is a wasteful number, since it uses less digits than its factorization.

97915715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598.

The product of its digits is 99225, while the sum is 44.

The square root of 97915715 is about 9895.2369855401. The cubic root of 97915715 is about 460.9114176144.

The spelling of 97915715 in words is "ninety-seven million, nine hundred fifteen thousand, seven hundred fifteen".