64287906 has 16 divisors (see below), whose sum is σ = 135343200. Its totient is φ = 20301408.

The previous prime is 64287871. The next prime is 64287911. The reversal of 64287906 is 60978246.

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, 281851 + ... + 282078.

It is an arithmetic number, because the mean of its divisors is an integer number (8458950).

Almost surely, 2^64287906 is an apocalyptic number.

64287906 is an abundant number, since it is smaller than the sum of its proper divisors (71055294).

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

64287906 is a wasteful number, since it uses less digits than its factorization.

64287906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563953.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 64287906 is about 8017.9739336069. The cubic root of 64287906 is about 400.5989069951.

The spelling of 64287906 in words is "sixty-four million, two hundred eighty-seven thousand, nine hundred six".