86818579 has 2 divisors, whose sum is σ = 86818580. Its totient is φ = 86818578.

The previous prime is 86818573. The next prime is 86818601. The reversal of 86818579 is 97581868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86818579 - 2⁷ = 86818451 is a prime.

It is not a weakly prime, because it can be changed into another prime (86818573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43409289 + 43409290.

It is an arithmetic number, because the mean of its divisors is an integer number (43409290).

Almost surely, 2^86818579 is an apocalyptic number.

86818579 is a deficient number, since it is larger than the sum of its proper divisors (1).

86818579 is an equidigital number, since it uses as much as digits as its factorization.

86818579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 52.

The square root of 86818579 is about 9317.6487914066. The cubic root of 86818579 is about 442.7965458785.

The spelling of 86818579 in words is "eighty-six million, eight hundred eighteen thousand, five hundred seventy-nine".