64331686 has 8 divisors (see below), whose sum is σ = 99825120. Its totient is φ = 31056648.

The previous prime is 64331677. The next prime is 64331693. The reversal of 64331686 is 68613346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554526 + ... + 554641.

It is an arithmetic number, because the mean of its divisors is an integer number (12478140).

Almost surely, 2^64331686 is an apocalyptic number.

64331686 is a deficient number, since it is larger than the sum of its proper divisors (35493434).

64331686 is a wasteful number, since it uses less digits than its factorization.

64331686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109198.

The product of its digits is 62208, while the sum is 37.

The square root of 64331686 is about 8020.7035850978. The cubic root of 64331686 is about 400.6898221795.

The spelling of 64331686 in words is "sixty-four million, three hundred thirty-one thousand, six hundred eighty-six".