86684879 has 2 divisors, whose sum is σ = 86684880. Its totient is φ = 86684878.

The previous prime is 86684869. The next prime is 86684957. The reversal of 86684879 is 97848668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86684879 - 2⁴ = 86684863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86684869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43342439 + 43342440.

It is an arithmetic number, because the mean of its divisors is an integer number (43342440).

Almost surely, 2^86684879 is an apocalyptic number.

86684879 is a deficient number, since it is larger than the sum of its proper divisors (1).

86684879 is an equidigital number, since it uses as much as digits as its factorization.

86684879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4644864, while the sum is 56.

The square root of 86684879 is about 9310.4714703392. The cubic root of 86684879 is about 442.5691279109.

The spelling of 86684879 in words is "eighty-six million, six hundred eighty-four thousand, eight hundred seventy-nine".