64521926 has 48 divisors (see below), whose sum is σ = 118441440. Its totient is φ = 26248320.

The previous prime is 64521911. The next prime is 64521937. The reversal of 64521926 is 62912546.

It is a happy number.

64521926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207311 + ... + 207621.

It is an arithmetic number, because the mean of its divisors is an integer number (2467530).

Almost surely, 2^64521926 is an apocalyptic number.

64521926 is a deficient number, since it is larger than the sum of its proper divisors (53919514).

64521926 is a wasteful number, since it uses less digits than its factorization.

64521926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 64521926 is about 8032.5541392511. The cubic root of 64521926 is about 401.0844033501.

The spelling of 64521926 in words is "sixty-four million, five hundred twenty-one thousand, nine hundred twenty-six".