64331516 has 12 divisors (see below), whose sum is σ = 112942032. Its totient is φ = 32062368.

The previous prime is 64331513. The next prime is 64331521. The reversal of 64331516 is 61513346.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64331513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24440 + ... + 26943.

It is an arithmetic number, because the mean of its divisors is an integer number (9411836).

Almost surely, 2^64331516 is an apocalyptic number.

It is an amenable number.

64331516 is a deficient number, since it is larger than the sum of its proper divisors (48610516).

64331516 is a wasteful number, since it uses less digits than its factorization.

64331516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51700 (or 51698 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 64331516 is about 8020.6929875167. The cubic root of 64331516 is about 400.6894692310.

The spelling of 64331516 in words is "sixty-four million, three hundred thirty-one thousand, five hundred sixteen".