64785936 has 20 divisors (see below), whose sum is σ = 167363792. Its totient is φ = 21595296.

The previous prime is 64785911. The next prime is 64785937. The reversal of 64785936 is 63958746.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 1349707 = 64785936 / (6 + 4 + 7 + 8 + 5 + 9 + 3 + 6).

It is not an unprimeable number, because it can be changed into a prime (64785937) 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, 674806 + ... + 674901.

Almost surely, 2^64785936 is an apocalyptic number.

It is an amenable number.

64785936 is an abundant number, since it is smaller than the sum of its proper divisors (102577856).

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

64785936 is a wasteful number, since it uses less digits than its factorization.

64785936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349718 (or 1349712 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 48.

The square root of 64785936 is about 8048.9711143723. The cubic root of 64785936 is about 401.6307095980.

The spelling of 64785936 in words is "sixty-four million, seven hundred eighty-five thousand, nine hundred thirty-six".