97665288 has 32 divisors (see below), whose sum is σ = 279044160. Its totient is φ = 27904320.

The previous prime is 97665277. The next prime is 97665317. The reversal of 97665288 is 88256679.

It is a self number, because there is not a number n which added to its sum of digits gives 97665288.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290503 + ... + 290838.

It is an arithmetic number, because the mean of its divisors is an integer number (8720130).

Almost surely, 2^97665288 is an apocalyptic number.

It is an amenable number.

97665288 is an abundant number, since it is smaller than the sum of its proper divisors (181378872).

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

97665288 is a wasteful number, since it uses less digits than its factorization.

97665288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581357 (or 581353 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 97665288 is about 9882.5749680941. The cubic root of 97665288 is about 460.5181433032.

The spelling of 97665288 in words is "ninety-seven million, six hundred sixty-five thousand, two hundred eighty-eight".