749478564 has 72 divisors (see below), whose sum is σ = 1916838560. Its totient is φ = 246903552.

The previous prime is 749478559. The next prime is 749478607. The reversal of 749478564 is 465874947.

749478564 is a `hidden beast` number, since 7 + 4 + 9 + 4 + 78 + 564 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 749478564.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1977327 + ... + 1977705.

Almost surely, 2^749478564 is an apocalyptic number.

It is an amenable number.

749478564 is an abundant number, since it is smaller than the sum of its proper divisors (1167359996).

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

749478564 is a wasteful number, since it uses less digits than its factorization.

749478564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 884 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 749478564 is about 27376.6061446630. The cubic root of 749478564 is about 908.3496893575.

The spelling of 749478564 in words is "seven hundred forty-nine million, four hundred seventy-eight thousand, five hundred sixty-four".