63564436 has 12 divisors (see below), whose sum is σ = 119794612. Its totient is φ = 29337408.

The previous prime is 63564407. The next prime is 63564467. The reversal of 63564436 is 63446536.

It can be written as a sum of positive squares in 2 ways, for example, as 34339600 + 29224836 = 5860^2 + 5406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 63564395 and 63564404.

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, 611145 + ... + 611248.

Almost surely, 2^63564436 is an apocalyptic number.

It is an amenable number.

63564436 is a deficient number, since it is larger than the sum of its proper divisors (56230176).

63564436 is a wasteful number, since it uses less digits than its factorization.

63564436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222410 (or 1222408 counting only the distinct ones).

The product of its digits is 155520, while the sum is 37.

The square root of 63564436 is about 7972.7307743332. The cubic root of 63564436 is about 399.0905086309.

It can be divided in two parts, 63564 and 436, that added together give a cube (64000 = 40³).

The spelling of 63564436 in words is "sixty-three million, five hundred sixty-four thousand, four hundred thirty-six".