83715664 has 10 divisors (see below), whose sum is σ = 162199130. Its totient is φ = 41857824.

The previous prime is 83715661. The next prime is 83715707. The reversal of 83715664 is 46651738.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49000000 + 34715664 = 7000^2 + 5892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83715661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2616099 + ... + 2616130.

It is an arithmetic number, because the mean of its divisors is an integer number (16219913).

Almost surely, 2^83715664 is an apocalyptic number.

It is an amenable number.

83715664 is a deficient number, since it is larger than the sum of its proper divisors (78483466).

83715664 is a wasteful number, since it uses less digits than its factorization.

83715664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5232237 (or 5232231 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 83715664 is about 9149.6264404619. The cubic root of 83715664 is about 437.4572065899.

The spelling of 83715664 in words is "eighty-three million, seven hundred fifteen thousand, six hundred sixty-four".