74684144656 has 45 divisors (see below), whose sum is σ = 159076608159. Its totient is φ = 33941872800.

The previous prime is 74684144641. The next prime is 74684144663. The reversal of 74684144656 is 65644148647.

The square root of 74684144656 is 273284.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74684144597 and 74684144606.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 12021391 + ... + 12027601.

Almost surely, 2^74684144656 is an apocalyptic number.

74684144656 is the 273284-th square number.

It is an amenable number.

74684144656 is an abundant number, since it is smaller than the sum of its proper divisors (84392463503).

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

74684144656 is an frugal number, since it uses more digits than its factorization.

74684144656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12452 (or 6224 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 55.

The spelling of 74684144656 in words is "seventy-four billion, six hundred eighty-four million, one hundred forty-four thousand, six hundred fifty-six".