64331356 has 6 divisors (see below), whose sum is σ = 112579880. Its totient is φ = 32165676.

The previous prime is 64331341. The next prime is 64331357. The reversal of 64331356 is 65313346.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8041416 + ... + 8041423.

Almost surely, 2^64331356 is an apocalyptic number.

It is an amenable number.

64331356 is a deficient number, since it is larger than the sum of its proper divisors (48248524).

64331356 is a wasteful number, since it uses less digits than its factorization.

64331356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16082843 (or 16082841 counting only the distinct ones).

The product of its digits is 19440, while the sum is 31.

The square root of 64331356 is about 8020.6830133100. The cubic root of 64331356 is about 400.6891370435.

The spelling of 64331356 in words is "sixty-four million, three hundred thirty-one thousand, three hundred fifty-six".