63564537 has 4 divisors (see below), whose sum is σ = 84752720. Its totient is φ = 42376356.

The previous prime is 63564517. The next prime is 63564551. The reversal of 63564537 is 73546536.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63564537 - 2¹⁶ = 63499001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63564495 and 63564504.

It is not an unprimeable number, because it can be changed into a prime (63564517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10594087 + ... + 10594092.

It is an arithmetic number, because the mean of its divisors is an integer number (21188180).

Almost surely, 2^63564537 is an apocalyptic number.

It is an amenable number.

63564537 is a deficient number, since it is larger than the sum of its proper divisors (21188183).

63564537 is a wasteful number, since it uses less digits than its factorization.

63564537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21188182.

The product of its digits is 226800, while the sum is 39.

The square root of 63564537 is about 7972.7371084214. The cubic root of 63564537 is about 399.0907200076.

The spelling of 63564537 in words is "sixty-three million, five hundred sixty-four thousand, five hundred thirty-seven".