64285638 has 16 divisors (see below), whose sum is σ = 128670960. Its totient is φ = 21411936.

The previous prime is 64285609. The next prime is 64285651. The reversal of 64285638 is 83658246.

It is a self number, because there is not a number n which added to its sum of digits gives 64285638.

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, 6228 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (8041935).

Almost surely, 2^64285638 is an apocalyptic number.

64285638 is an abundant number, since it is smaller than the sum of its proper divisors (64385322).

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

64285638 is a wasteful number, since it uses less digits than its factorization.

64285638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8311.

The product of its digits is 276480, while the sum is 42.

The square root of 64285638 is about 8017.8325001212. The cubic root of 64285638 is about 400.5941960572.

The spelling of 64285638 in words is "sixty-four million, two hundred eighty-five thousand, six hundred thirty-eight".