64513312 has 24 divisors (see below), whose sum is σ = 128755116. Its totient is φ = 31813632.

The previous prime is 64513297. The next prime is 64513331. The reversal of 64513312 is 21331546.

It can be written as a sum of positive squares in 2 ways, for example, as 57093136 + 7420176 = 7556^2 + 2724^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11473 + ... + 16144.

Almost surely, 2^64513312 is an apocalyptic number.

It is an amenable number.

64513312 is a deficient number, since it is larger than the sum of its proper divisors (64241804).

64513312 is a wasteful number, since it uses less digits than its factorization.

64513312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27700 (or 27692 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 64513312 is about 8032.0179282668. The cubic root of 64513312 is about 401.0665536308.

Adding to 64513312 its reverse (21331546), we get a palindrome (85844858).

The spelling of 64513312 in words is "sixty-four million, five hundred thirteen thousand, three hundred twelve".