86574689 has 2 divisors, whose sum is σ = 86574690. Its totient is φ = 86574688.

The previous prime is 86574647. The next prime is 86574701. The reversal of 86574689 is 98647568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70694464 + 15880225 = 8408^2 + 3985^2 .

It is a cyclic number.

It is not a de Polignac number, because 86574689 - 2²⁰ = 85526113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86574689.

It is not a weakly prime, because it can be changed into another prime (86574619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43287344 + 43287345.

It is an arithmetic number, because the mean of its divisors is an integer number (43287345).

Almost surely, 2^86574689 is an apocalyptic number.

It is an amenable number.

86574689 is a deficient number, since it is larger than the sum of its proper divisors (1).

86574689 is an equidigital number, since it uses as much as digits as its factorization.

86574689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 86574689 is about 9304.5520579983. The cubic root of 86574689 is about 442.3815236031.

The spelling of 86574689 in words is "eighty-six million, five hundred seventy-four thousand, six hundred eighty-nine".