64865016 has 32 divisors (see below), whose sum is σ = 180181200. Its totient is φ = 21621600.

The previous prime is 64864999. The next prime is 64865039. The reversal of 64865016 is 61056846.

64865016 is a `hidden beast` number, since 648 + 6 + 5 + 0 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 149935 + ... + 150366.

Almost surely, 2^64865016 is an apocalyptic number.

It is an amenable number.

64865016 is an abundant number, since it is smaller than the sum of its proper divisors (115316184).

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

64865016 is a wasteful number, since it uses less digits than its factorization.

64865016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300316 (or 300306 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 64865016 is about 8053.8820453245. The cubic root of 64865016 is about 401.7940580261.

The spelling of 64865016 in words is "sixty-four million, eight hundred sixty-five thousand, sixteen".