64312536 has 32 divisors (see below), whose sum is σ = 160988400. Its totient is φ = 21409920.

The previous prime is 64312529. The next prime is 64312571. The reversal of 64312536 is 63521346.

It is a super-2 number, since 2×64312536² = 8272204573502592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27210 + ... + 29478.

Almost surely, 2^64312536 is an apocalyptic number.

It is an amenable number.

64312536 is an abundant number, since it is smaller than the sum of its proper divisors (96675864).

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

64312536 is a wasteful number, since it uses less digits than its factorization.

64312536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459 (or 3455 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 64312536 is about 8019.5097106993. The cubic root of 64312536 is about 400.6500596505.

The spelling of 64312536 in words is "sixty-four million, three hundred twelve thousand, five hundred thirty-six".