64565516 has 12 divisors (see below), whose sum is σ = 113046360. Its totient is φ = 32266560.

The previous prime is 64565509. The next prime is 64565537. The reversal of 64565516 is 61556546.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64565516.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11876 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (9420530).

Almost surely, 2^64565516 is an apocalyptic number.

It is an amenable number.

64565516 is a deficient number, since it is larger than the sum of its proper divisors (48480844).

64565516 is a wasteful number, since it uses less digits than its factorization.

64565516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104 (or 8102 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 64565516 is about 8035.2670148540. The cubic root of 64565516 is about 401.1747051259.

The spelling of 64565516 in words is "sixty-four million, five hundred sixty-five thousand, five hundred sixteen".