74945664 has 96 divisors (see below), whose sum is σ = 219108240. Its totient is φ = 24583680.

The previous prime is 74945653. The next prime is 74945681. The reversal of 74945664 is 46654947.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76699 + ... + 77669.

Almost surely, 2^74945664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74945664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109554120).

74945664 is an abundant number, since it is smaller than the sum of its proper divisors (144162576).

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

74945664 is a wasteful number, since it uses less digits than its factorization.

74945664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058 (or 1043 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 74945664 is about 8657.1163790260. The cubic root of 74945664 is about 421.6144663640.

The spelling of 74945664 in words is "seventy-four million, nine hundred forty-five thousand, six hundred sixty-four".