97978764 has 36 divisors (see below), whose sum is σ = 247560936. Its totient is φ = 30146688.

The previous prime is 97978759. The next prime is 97978819. The reversal of 97978764 is 46787979.

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 in 11 ways as a sum of consecutive naturals, for example, 22129 + ... + 26184.

Almost surely, 2^97978764 is an apocalyptic number.

It is an amenable number.

97978764 is an abundant number, since it is smaller than the sum of its proper divisors (149582172).

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

97978764 is a wasteful number, since it uses less digits than its factorization.

97978764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48346 (or 48331 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 57.

The square root of 97978764 is about 9898.4222985282. The cubic root of 97978764 is about 461.0103250229.

The spelling of 97978764 in words is "ninety-seven million, nine hundred seventy-eight thousand, seven hundred sixty-four".