97785872 has 10 divisors (see below), whose sum is σ = 189460158. Its totient is φ = 48892928.

The previous prime is 97785859. The next prime is 97785881. The reversal of 97785872 is 27858779.

It can be written as a sum of positive squares in only one way, i.e., 97693456 + 92416 = 9884^2 + 304^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3055793 + ... + 3055824.

Almost surely, 2^97785872 is an apocalyptic number.

It is an amenable number.

97785872 is a deficient number, since it is larger than the sum of its proper divisors (91674286).

97785872 is a wasteful number, since it uses less digits than its factorization.

97785872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111625 (or 6111619 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 53.

The square root of 97785872 is about 9888.6739252541. The cubic root of 97785872 is about 460.7075940366.

The spelling of 97785872 in words is "ninety-seven million, seven hundred eighty-five thousand, eight hundred seventy-two".