86366557 has 2 divisors, whose sum is σ = 86366558. Its totient is φ = 86366556.

The previous prime is 86366549. The next prime is 86366593. The reversal of 86366557 is 75566368.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61873956 + 24492601 = 7866^2 + 4949^2 .

It is a cyclic number.

It is not a de Polignac number, because 86366557 - 2³ = 86366549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86366507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43183278 + 43183279.

It is an arithmetic number, because the mean of its divisors is an integer number (43183279).

Almost surely, 2^86366557 is an apocalyptic number.

It is an amenable number.

86366557 is a deficient number, since it is larger than the sum of its proper divisors (1).

86366557 is an equidigital number, since it uses as much as digits as its factorization.

86366557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 46.

The square root of 86366557 is about 9293.3609098108. The cubic root of 86366557 is about 442.0267330937.

The spelling of 86366557 in words is "eighty-six million, three hundred sixty-six thousand, five hundred fifty-seven".