97644880 has 40 divisors (see below), whose sum is σ = 230235264. Its totient is φ = 38505600.

The previous prime is 97644863. The next prime is 97644901. The reversal of 97644880 is 8844679.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 97644880.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2916 + ... + 14275.

Almost surely, 2^97644880 is an apocalyptic number.

It is an amenable number.

97644880 is an abundant number, since it is smaller than the sum of its proper divisors (132590384).

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

97644880 is a wasteful number, since it uses less digits than its factorization.

97644880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17275 (or 17269 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 97644880 is about 9881.5423897284. The cubic root of 97644880 is about 460.4860646628.

The spelling of 97644880 in words is "ninety-seven million, six hundred forty-four thousand, eight hundred eighty".