97687972 has 6 divisors (see below), whose sum is σ = 170953958. Its totient is φ = 48843984.

The previous prime is 97687963. The next prime is 97687991. The reversal of 97687972 is 27978679.

It can be written as a sum of positive squares in only one way, i.e., 83064996 + 14622976 = 9114^2 + 3824^2 .

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 as a sum of consecutive naturals, namely, 12210993 + ... + 12211000.

Almost surely, 2^97687972 is an apocalyptic number.

It is an amenable number.

97687972 is a deficient number, since it is larger than the sum of its proper divisors (73265986).

97687972 is a wasteful number, since it uses less digits than its factorization.

97687972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24421997 (or 24421995 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 55.

The square root of 97687972 is about 9883.7225780573. The cubic root of 97687972 is about 460.5537942668.

The spelling of 97687972 in words is "ninety-seven million, six hundred eighty-seven thousand, nine hundred seventy-two".