97658865 has 80 divisors (see below), whose sum is σ = 183648960. Its totient is φ = 49610880.

The previous prime is 97658861. The next prime is 97658881. The reversal of 97658865 is 56885679.

It is not a de Polignac number, because 97658865 - 2² = 97658861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97658861) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1457562 + ... + 1457628.

It is an arithmetic number, because the mean of its divisors is an integer number (2295612).

Almost surely, 2^97658865 is an apocalyptic number.

It is an amenable number.

97658865 is a deficient number, since it is larger than the sum of its proper divisors (85990095).

97658865 is a wasteful number, since it uses less digits than its factorization.

97658865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 195 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 97658865 is about 9882.2499968378. The cubic root of 97658865 is about 460.5080476901.

The spelling of 97658865 in words is "ninety-seven million, six hundred fifty-eight thousand, eight hundred sixty-five".