64716912 has 120 divisors (see below), whose sum is σ = 197154048. Its totient is φ = 19699200.

The previous prime is 64716889. The next prime is 64716919. The reversal of 64716912 is 21961746.

64716912 is a `hidden beast` number, since 647 + 1 + 6 + 9 + 1 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64716919) 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, 338737 + ... + 338927.

Almost surely, 2^64716912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64716912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98577024).

64716912 is an abundant number, since it is smaller than the sum of its proper divisors (132437136).

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

64716912 is a wasteful number, since it uses less digits than its factorization.

64716912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 390 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 64716912 is about 8044.6822187082. The cubic root of 64716912 is about 401.4880242620.

The spelling of 64716912 in words is "sixty-four million, seven hundred sixteen thousand, nine hundred twelve".