8715961 has 2 divisors, whose sum is σ = 8715962. Its totient is φ = 8715960.

The previous prime is 8715947. The next prime is 8715977. The reversal of 8715961 is 1695178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8643600 + 72361 = 2940^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 8715961 - 2⁹ = 8715449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8715961.

It is not a weakly prime, because it can be changed into another prime (8715901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4357980 + 4357981.

It is an arithmetic number, because the mean of its divisors is an integer number (4357981).

Almost surely, 2^8715961 is an apocalyptic number.

8715961 is the 1705-th hex number.

It is an amenable number.

8715961 is a deficient number, since it is larger than the sum of its proper divisors (1).

8715961 is an equidigital number, since it uses as much as digits as its factorization.

8715961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The square root of 8715961 is about 2952.2806438413. The cubic root of 8715961 is about 205.7967093054.

The spelling of 8715961 in words is "eight million, seven hundred fifteen thousand, nine hundred sixty-one".