8715665 has 16 divisors (see below), whose sum is σ = 12016512. Its totient is φ = 5944704.

The previous prime is 8715659. The next prime is 8715667. The reversal of 8715665 is 5665178.

It is a happy number.

8715665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 8715665 - 2⁴ = 8715649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8715667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7397 + ... + 8493.

It is an arithmetic number, because the mean of its divisors is an integer number (751032).

Almost surely, 2^8715665 is an apocalyptic number.

It is an amenable number.

8715665 is a deficient number, since it is larger than the sum of its proper divisors (3300847).

8715665 is a wasteful number, since it uses less digits than its factorization.

8715665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its digits is 50400, while the sum is 38.

The square root of 8715665 is about 2952.2305126802. The cubic root of 8715665 is about 205.7943796133.

The spelling of 8715665 in words is "eight million, seven hundred fifteen thousand, six hundred sixty-five".