97691432 has 16 divisors (see below), whose sum is σ = 183575700. Its totient is φ = 48737920.

The previous prime is 97691423. The next prime is 97691437. The reversal of 97691432 is 23419679.

It can be written as a sum of positive squares in 2 ways, for example, as 92428996 + 5262436 = 9614^2 + 2294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 97691432.

It is not an unprimeable number, because it can be changed into a prime (97691437) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 9557 + ... + 16932.

Almost surely, 2^97691432 is an apocalyptic number.

It is an amenable number.

97691432 is a deficient number, since it is larger than the sum of its proper divisors (85884268).

97691432 is a wasteful number, since it uses less digits than its factorization.

97691432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26956 (or 26952 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 97691432 is about 9883.8976117724. The cubic root of 97691432 is about 460.5592316381.

The spelling of 97691432 in words is "ninety-seven million, six hundred ninety-one thousand, four hundred thirty-two".