97755720 has 32 divisors (see below), whose sum is σ = 293267520. Its totient is φ = 26068160.

The previous prime is 97755719. The next prime is 97755761. The reversal of 97755720 is 2755779.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407196 + ... + 407435.

It is an arithmetic number, because the mean of its divisors is an integer number (9164610).

Almost surely, 2^97755720 is an apocalyptic number.

It is an amenable number.

97755720 is an abundant number, since it is smaller than the sum of its proper divisors (195511800).

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

97755720 is a wasteful number, since it uses less digits than its factorization.

97755720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814645 (or 814641 counting only the distinct ones).

The product of its (nonzero) digits is 154350, while the sum is 42.

The square root of 97755720 is about 9887.1492352447. The cubic root of 97755720 is about 460.6602365363.

The spelling of 97755720 in words is "ninety-seven million, seven hundred fifty-five thousand, seven hundred twenty".