63216564 has 24 divisors (see below), whose sum is σ = 152264448. Its totient is φ = 20392320.

The previous prime is 63216541. The next prime is 63216583. The reversal of 63216564 is 46561236.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84597 + ... + 85340.

It is an arithmetic number, because the mean of its divisors is an integer number (6344352).

Almost surely, 2^63216564 is an apocalyptic number.

It is an amenable number.

63216564 is an abundant number, since it is smaller than the sum of its proper divisors (89047884).

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

63216564 is a wasteful number, since it uses less digits than its factorization.

63216564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169975 (or 169973 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 63216564 is about 7950.8844791004. The cubic root of 63216564 is about 398.3611361503.

The spelling of 63216564 in words is "sixty-three million, two hundred sixteen thousand, five hundred sixty-four".