63564656 has 10 divisors (see below), whose sum is σ = 123156552. Its totient is φ = 31782320.

The previous prime is 63564629. The next prime is 63564659. The reversal of 63564656 is 65646536.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63564659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986380 + ... + 1986411.

Almost surely, 2^63564656 is an apocalyptic number.

It is an amenable number.

63564656 is a deficient number, since it is larger than the sum of its proper divisors (59591896).

63564656 is a wasteful number, since it uses less digits than its factorization.

63564656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972799 (or 3972793 counting only the distinct ones).

The product of its digits is 388800, while the sum is 41.

The square root of 63564656 is about 7972.7445713506. The cubic root of 63564656 is about 399.0909690551.

The spelling of 63564656 in words is "sixty-three million, five hundred sixty-four thousand, six hundred fifty-six".