85168579 has 2 divisors, whose sum is σ = 85168580. Its totient is φ = 85168578.

The previous prime is 85168543. The next prime is 85168637. The reversal of 85168579 is 97586158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85168579 - 2⁷ = 85168451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85168519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42584289 + 42584290.

It is an arithmetic number, because the mean of its divisors is an integer number (42584290).

Almost surely, 2^85168579 is an apocalyptic number.

85168579 is a deficient number, since it is larger than the sum of its proper divisors (1).

85168579 is an equidigital number, since it uses as much as digits as its factorization.

85168579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 49.

The square root of 85168579 is about 9228.6824086648. The cubic root of 85168579 is about 439.9734470891.

The spelling of 85168579 in words is "eighty-five million, one hundred sixty-eight thousand, five hundred seventy-nine".