86678623 has 2 divisors, whose sum is σ = 86678624. Its totient is φ = 86678622.

The previous prime is 86678617. The next prime is 86678659. The reversal of 86678623 is 32687668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86678623 - 2²⁵ = 53124191 is a prime.

It is a super-2 number, since 2×86678623² = 15026367370352258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86678663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43339311 + 43339312.

It is an arithmetic number, because the mean of its divisors is an integer number (43339312).

Almost surely, 2^86678623 is an apocalyptic number.

86678623 is a deficient number, since it is larger than the sum of its proper divisors (1).

86678623 is an equidigital number, since it uses as much as digits as its factorization.

86678623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 86678623 is about 9310.1354984769. The cubic root of 86678623 is about 442.5584809979.

The spelling of 86678623 in words is "eighty-six million, six hundred seventy-eight thousand, six hundred twenty-three".