74774664 has 80 divisors (see below), whose sum is σ = 210721500. Its totient is φ = 24772608.

The previous prime is 74774647. The next prime is 74774677. The reversal of 74774664 is 46647747.

It can be written as a sum of positive squares in 2 ways, for example, as 64160100 + 10614564 = 8010^2 + 3258^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 166312 + ... + 166760.

Almost surely, 2^74774664 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 74774664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105360750).

74774664 is an abundant number, since it is smaller than the sum of its proper divisors (135946836).

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

74774664 is a wasteful number, since it uses less digits than its factorization.

74774664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 711 counting only the distinct ones).

The product of its digits is 790272, while the sum is 45.

The square root of 74774664 is about 8647.2344712052. The cubic root of 74774664 is about 421.2935628709.

The spelling of 74774664 in words is "seventy-four million, seven hundred seventy-four thousand, six hundred sixty-four".