63306564 has 12 divisors (see below), whose sum is σ = 147715344. Its totient is φ = 21102184.

The previous prime is 63306563. The next prime is 63306569. The reversal of 63306564 is 46560336.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (63306563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637762 + ... + 2637785.

It is an arithmetic number, because the mean of its divisors is an integer number (12309612).

Almost surely, 2^63306564 is an apocalyptic number.

It is an amenable number.

63306564 is an abundant number, since it is smaller than the sum of its proper divisors (84408780).

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

63306564 is a wasteful number, since it uses less digits than its factorization.

63306564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5275554 (or 5275552 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 63306564 is about 7956.5422138012. The cubic root of 63306564 is about 398.5500924369.

The spelling of 63306564 in words is "sixty-three million, three hundred six thousand, five hundred sixty-four".