64379936 has 24 divisors (see below), whose sum is σ = 126928620. Its totient is φ = 32144128.

The previous prime is 64379933. The next prime is 64379957. The reversal of 64379936 is 63997346.

It can be written as a sum of positive squares in 2 ways, for example, as 64320400 + 59536 = 8020^2 + 244^2 .

It is not an unprimeable number, because it can be changed into a prime (64379933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38510 + ... + 40146.

Almost surely, 2^64379936 is an apocalyptic number.

It is an amenable number.

64379936 is a deficient number, since it is larger than the sum of its proper divisors (62548684).

64379936 is a wasteful number, since it uses less digits than its factorization.

64379936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876 (or 2868 counting only the distinct ones).

The product of its digits is 734832, while the sum is 47.

The square root of 64379936 is about 8023.7108621884. The cubic root of 64379936 is about 400.7899721662.

The spelling of 64379936 in words is "sixty-four million, three hundred seventy-nine thousand, nine hundred thirty-six".