64684886 has 16 divisors (see below), whose sum is σ = 112769280. Its totient is φ = 27251880.

The previous prime is 64684861. The next prime is 64684891. The reversal of 64684886 is 68848646.

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, 38330 + ... + 39981.

It is an arithmetic number, because the mean of its divisors is an integer number (7048080).

Almost surely, 2^64684886 is an apocalyptic number.

64684886 is a deficient number, since it is larger than the sum of its proper divisors (48084394).

64684886 is a wasteful number, since it uses less digits than its factorization.

64684886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78379.

The product of its digits is 1769472, while the sum is 50.

The square root of 64684886 is about 8042.6914649264. The cubic root of 64684886 is about 401.4217861559.

The spelling of 64684886 in words is "sixty-four million, six hundred eighty-four thousand, eight hundred eighty-six".