74977664 has 32 divisors (see below), whose sum is σ = 149799240. Its totient is φ = 37381120.

The previous prime is 74977657. The next prime is 74977697. The reversal of 74977664 is 46677947.

It is a tau number, because it is divible by the number of its divisors (32).

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, 62252 + ... + 63444.

Almost surely, 2^74977664 is an apocalyptic number.

It is an amenable number.

74977664 is a deficient number, since it is larger than the sum of its proper divisors (74821576).

74977664 is a wasteful number, since it uses less digits than its factorization.

74977664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698 (or 1686 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 50.

The square root of 74977664 is about 8658.9643722561. The cubic root of 74977664 is about 421.6744642454.

The spelling of 74977664 in words is "seventy-four million, nine hundred seventy-seven thousand, six hundred sixty-four".