64679944 has 32 divisors (see below), whose sum is σ = 139536000. Its totient is φ = 27532800.

The previous prime is 64679941. The next prime is 64679977. The reversal of 64679944 is 44997646.

It is a happy number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (64679941) 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, 4632 + ... + 12280.

It is an arithmetic number, because the mean of its divisors is an integer number (4360500).

Almost surely, 2^64679944 is an apocalyptic number.

It is an amenable number.

64679944 is an abundant number, since it is smaller than the sum of its proper divisors (74856056).

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

64679944 is a wasteful number, since it uses less digits than its factorization.

64679944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813 (or 7809 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 64679944 is about 8042.3842235994. The cubic root of 64679944 is about 401.4115628662.

The spelling of 64679944 in words is "sixty-four million, six hundred seventy-nine thousand, nine hundred forty-four".