74991964 has 12 divisors (see below), whose sum is σ = 138955824. Its totient is φ = 35290304.

The previous prime is 74991953. The next prime is 74991977. The reversal of 74991964 is 46919947.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551344 + ... + 551479.

It is an arithmetic number, because the mean of its divisors is an integer number (11579652).

Almost surely, 2^74991964 is an apocalyptic number.

It is an amenable number.

74991964 is a deficient number, since it is larger than the sum of its proper divisors (63963860).

74991964 is a wasteful number, since it uses less digits than its factorization.

74991964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102844 (or 1102842 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 74991964 is about 8659.7900667395. The cubic root of 74991964 is about 421.7012702798.

The spelling of 74991964 in words is "seventy-four million, nine hundred ninety-one thousand, nine hundred sixty-four".