97664432 has 20 divisors (see below), whose sum is σ = 189902280. Its totient is φ = 48657408.

The previous prime is 97664429. The next prime is 97664467. The reversal of 97664432 is 23446679.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 97664432.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6257 + ... + 15312.

It is an arithmetic number, because the mean of its divisors is an integer number (9495114).

Almost surely, 2^97664432 is an apocalyptic number.

It is an amenable number.

97664432 is a deficient number, since it is larger than the sum of its proper divisors (92237848).

97664432 is a wasteful number, since it uses less digits than its factorization.

97664432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21860 (or 21854 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 97664432 is about 9882.5316594484. The cubic root of 97664432 is about 460.5167978757.

The spelling of 97664432 in words is "ninety-seven million, six hundred sixty-four thousand, four hundred thirty-two".