636564484 has 6 divisors (see below), whose sum is σ = 1113987854. Its totient is φ = 318282240.

The previous prime is 636564479. The next prime is 636564497. The reversal of 636564484 is 484465636.

It can be written as a sum of positive squares in only one way, i.e., 514019584 + 122544900 = 22672^2 + 11070^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79570557 + ... + 79570564.

Almost surely, 2^636564484 is an apocalyptic number.

It is an amenable number.

636564484 is a deficient number, since it is larger than the sum of its proper divisors (477423370).

636564484 is a wasteful number, since it uses less digits than its factorization.

636564484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159141125 (or 159141123 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 46.

The square root of 636564484 is about 25230.2295669302. The cubic root of 636564484 is about 860.2291096812.

The spelling of 636564484 in words is "six hundred thirty-six million, five hundred sixty-four thousand, four hundred eighty-four".