8715978 has 16 divisors (see below), whose sum is σ = 19368960. Its totient is φ = 2905308.

The previous prime is 8715977. The next prime is 8715989. The reversal of 8715978 is 8795178.

It is not an unprimeable number, because it can be changed into a prime (8715977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80650 + ... + 80757.

It is an arithmetic number, because the mean of its divisors is an integer number (1210560).

Almost surely, 2^8715978 is an apocalyptic number.

8715978 is an abundant number, since it is smaller than the sum of its proper divisors (10652982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8715978 is a wasteful number, since it uses less digits than its factorization.

8715978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161418 (or 161412 counting only the distinct ones).

The product of its digits is 141120, while the sum is 45.

The square root of 8715978 is about 2952.2835229700. The cubic root of 8715978 is about 205.7968431037.

The spelling of 8715978 in words is "eight million, seven hundred fifteen thousand, nine hundred seventy-eight".