63564165 has 24 divisors (see below), whose sum is σ = 125918208. Its totient is φ = 29057760.

The previous prime is 63564131. The next prime is 63564169. The reversal of 63564165 is 56146536.

63564165 is a `hidden beast` number, since 6 + 3 + 5 + 641 + 6 + 5 = 666.

It is not a de Polignac number, because 63564165 - 2⁸ = 63563909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63564169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100581 + ... + 101210.

It is an arithmetic number, because the mean of its divisors is an integer number (5246592).

Almost surely, 2^63564165 is an apocalyptic number.

It is an amenable number.

63564165 is a deficient number, since it is larger than the sum of its proper divisors (62354043).

63564165 is a wasteful number, since it uses less digits than its factorization.

63564165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201809 (or 201806 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 63564165 is about 7972.7137788836. The cubic root of 63564165 is about 399.0899414706.

The spelling of 63564165 in words is "sixty-three million, five hundred sixty-four thousand, one hundred sixty-five".