74908784664 has 128 divisors (see below), whose sum is σ = 240257740800. Its totient is φ = 21181824000.

The previous prime is 74908784659. The next prime is 74908784681. The reversal of 74908784664 is 46648780947.

74908784664 is a `hidden beast` number, since 7 + 4 + 90 + 87 + 8 + 466 + 4 = 666.

It is a super-2 number, since 2×74908784664² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108712 + ... + 402039.

It is an arithmetic number, because the mean of its divisors is an integer number (1877013600).

Almost surely, 2^74908784664 is an apocalyptic number.

It is an amenable number.

74908784664 is an abundant number, since it is smaller than the sum of its proper divisors (165348956136).

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

74908784664 is a wasteful number, since it uses less digits than its factorization.

74908784664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510870 (or 510860 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 74908784664 in words is "seventy-four billion, nine hundred eight million, seven hundred eighty-four thousand, six hundred sixty-four".