8315689 has 2 divisors, whose sum is σ = 8315690. Its totient is φ = 8315688.

The previous prime is 8315651. The next prime is 8315701. The reversal of 8315689 is 9865138.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7469289 + 846400 = 2733^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 8315689 - 2⁷ = 8315561 is a prime.

It is not a weakly prime, because it can be changed into another prime (8315609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4157844 + 4157845.

It is an arithmetic number, because the mean of its divisors is an integer number (4157845).

Almost surely, 2^8315689 is an apocalyptic number.

It is an amenable number.

8315689 is a deficient number, since it is larger than the sum of its proper divisors (1).

8315689 is an equidigital number, since it uses as much as digits as its factorization.

8315689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 40.

The square root of 8315689 is about 2883.6936383742. The cubic root of 8315689 is about 202.5968768795.

The spelling of 8315689 in words is "eight million, three hundred fifteen thousand, six hundred eighty-nine".