64317816 has 48 divisors (see below), whose sum is σ = 174727800. Its totient is φ = 21373632.

The previous prime is 64317797. The next prime is 64317833. The reversal of 64317816 is 61871346.

64317816 is a `hidden beast` number, since 643 + 1 + 7 + 8 + 1 + 6 = 666.

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

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26110 + ... + 28466.

Almost surely, 2^64317816 is an apocalyptic number.

It is an amenable number.

64317816 is an abundant number, since it is smaller than the sum of its proper divisors (110409984).

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

64317816 is a wasteful number, since it uses less digits than its factorization.

64317816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748 (or 2741 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 64317816 is about 8019.8389011251. The cubic root of 64317816 is about 400.6610236841.

The spelling of 64317816 in words is "sixty-four million, three hundred seventeen thousand, eight hundred sixteen".