64768536 has 48 divisors (see below), whose sum is σ = 200475600. Its totient is φ = 18505152.

The previous prime is 64768507. The next prime is 64768547. The reversal of 64768536 is 63586746.

It is a junction number, because it is equal to n+sod(n) for n = 64768491 and 64768500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63751 + ... + 64758.

It is an arithmetic number, because the mean of its divisors is an integer number (4176575).

Almost surely, 2^64768536 is an apocalyptic number.

It is an amenable number.

64768536 is an abundant number, since it is smaller than the sum of its proper divisors (135707064).

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

64768536 is a wasteful number, since it uses less digits than its factorization.

64768536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128528 (or 128521 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 64768536 is about 8047.8901582961. The cubic root of 64768536 is about 401.5947501470.

The spelling of 64768536 in words is "sixty-four million, seven hundred sixty-eight thousand, five hundred thirty-six".