64243008 has 42 divisors (see below), whose sum is σ = 184142634. Its totient is φ = 21414144.

The previous prime is 64242991. The next prime is 64243021. The reversal of 64243008 is 80034246.

It can be written as a sum of positive squares in only one way, i.e., 36869184 + 27373824 = 6072^2 + 5232^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55191 + ... + 56342.

Almost surely, 2^64243008 is an apocalyptic number.

It is an amenable number.

64243008 is an abundant number, since it is smaller than the sum of its proper divisors (119899626).

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

64243008 is a wasteful number, since it uses less digits than its factorization.

64243008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111551 (or 111538 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 64243008 is about 8015.1736100973. The cubic root of 64243008 is about 400.5056272501.

The spelling of 64243008 in words is "sixty-four million, two hundred forty-three thousand, eight".