64731426 has 32 divisors (see below), whose sum is σ = 136074048. Its totient is φ = 20502720.

The previous prime is 64731413. The next prime is 64731449. The reversal of 64731426 is 62413746.

It is a happy 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, 6156 + ... + 12936.

It is an arithmetic number, because the mean of its divisors is an integer number (4252314).

Almost surely, 2^64731426 is an apocalyptic number.

64731426 is an abundant number, since it is smaller than the sum of its proper divisors (71342622).

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

64731426 is a wasteful number, since it uses less digits than its factorization.

64731426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866.

The product of its digits is 24192, while the sum is 33.

The square root of 64731426 is about 8045.5842547325. The cubic root of 64731426 is about 401.5180357970.

The spelling of 64731426 in words is "sixty-four million, seven hundred thirty-one thousand, four hundred twenty-six".