86768569 has 2 divisors, whose sum is σ = 86768570. Its totient is φ = 86768568.

The previous prime is 86768531. The next prime is 86768599. The reversal of 86768569 is 96586768.

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., 86713344 + 55225 = 9312^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 86768569 - 2⁹ = 86768057 is a prime.

It is a super-2 number, since 2×86768569² = 15057569132615522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86768599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43384284 + 43384285.

It is an arithmetic number, because the mean of its divisors is an integer number (43384285).

Almost surely, 2^86768569 is an apocalyptic number.

It is an amenable number.

86768569 is a deficient number, since it is larger than the sum of its proper divisors (1).

86768569 is an equidigital number, since it uses as much as digits as its factorization.

86768569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 55.

The square root of 86768569 is about 9314.9647879098. The cubic root of 86768569 is about 442.7115083640.

The spelling of 86768569 in words is "eighty-six million, seven hundred sixty-eight thousand, five hundred sixty-nine".