64885790 has 32 divisors (see below), whose sum is σ = 123842304. Its totient is φ = 24433920.

The previous prime is 64885771. The next prime is 64885811. The reversal of 64885790 is 9758846.

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 15 ways as a sum of consecutive naturals, for example, 8642 + ... + 14298.

It is an arithmetic number, because the mean of its divisors is an integer number (3870072).

Almost surely, 2^64885790 is an apocalyptic number.

64885790 is a deficient number, since it is larger than the sum of its proper divisors (58956514).

64885790 is a wasteful number, since it uses less digits than its factorization.

64885790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5732.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 64885790 is about 8055.1716306979. The cubic root of 64885790 is about 401.8369469841.

The spelling of 64885790 in words is "sixty-four million, eight hundred eighty-five thousand, seven hundred ninety".