86540579 has 2 divisors, whose sum is σ = 86540580. Its totient is φ = 86540578.

The previous prime is 86540563. The next prime is 86540581. The reversal of 86540579 is 97504568.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86540579 - 2⁴ = 86540563 is a prime.

Together with 86540581, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86540549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43270289 + 43270290.

It is an arithmetic number, because the mean of its divisors is an integer number (43270290).

Almost surely, 2^86540579 is an apocalyptic number.

86540579 is a deficient number, since it is larger than the sum of its proper divisors (1).

86540579 is an equidigital number, since it uses as much as digits as its factorization.

86540579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 86540579 is about 9302.7189036324. The cubic root of 86540579 is about 442.3234172592.

The spelling of 86540579 in words is "eighty-six million, five hundred forty thousand, five hundred seventy-nine".