64316512 has 48 divisors (see below), whose sum is σ = 137062800. Its totient is φ = 29532672.

The previous prime is 64316503. The next prime is 64316513. The reversal of 64316512 is 21561346.

It is a super-2 number, since 2×64316512² = 8273227431692288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64316513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144963 + ... + 145405.

It is an arithmetic number, because the mean of its divisors is an integer number (2855475).

Almost surely, 2^64316512 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 64316512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68531400).

64316512 is an abundant number, since it is smaller than the sum of its proper divisors (72746288).

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

64316512 is a wasteful number, since it uses less digits than its factorization.

64316512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 807 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 64316512 is about 8019.7576023219. The cubic root of 64316512 is about 400.6583159559.

Adding to 64316512 its reverse (21561346), we get a palindrome (85877858).

The spelling of 64316512 in words is "sixty-four million, three hundred sixteen thousand, five hundred twelve".