64072590 has 16 divisors (see below), whose sum is σ = 153774288. Its totient is φ = 17086016.

The previous prime is 64072577. The next prime is 64072607. The reversal of 64072590 is 9527046.

It is a Curzon number.

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, 1067847 + ... + 1067906.

It is an arithmetic number, because the mean of its divisors is an integer number (9610893).

Almost surely, 2^64072590 is an apocalyptic number.

64072590 is an abundant number, since it is smaller than the sum of its proper divisors (89701698).

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

64072590 is a wasteful number, since it uses less digits than its factorization.

64072590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135763.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 64072590 is about 8004.5355892769. The cubic root of 64072590 is about 400.1511720270.

The spelling of 64072590 in words is "sixty-four million, seventy-two thousand, five hundred ninety".