64313772 has 12 divisors (see below), whose sum is σ = 150065496. Its totient is φ = 21437920.

The previous prime is 64313749. The next prime is 64313797. The reversal of 64313772 is 27731346.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×64313772² = 8272522537735968, which contains 22 as substring.

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, 2679729 + ... + 2679752.

It is an arithmetic number, because the mean of its divisors is an integer number (12505458).

Almost surely, 2^64313772 is an apocalyptic number.

It is an amenable number.

64313772 is an abundant number, since it is smaller than the sum of its proper divisors (85751724).

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

64313772 is a wasteful number, since it uses less digits than its factorization.

64313772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5359488 (or 5359486 counting only the distinct ones).

The product of its digits is 21168, while the sum is 33.

The square root of 64313772 is about 8019.5867723967. The cubic root of 64313772 is about 400.6526262849.

The spelling of 64313772 in words is "sixty-four million, three hundred thirteen thousand, seven hundred seventy-two".