86620879 has 2 divisors, whose sum is σ = 86620880. Its totient is φ = 86620878.

The previous prime is 86620871. The next prime is 86620907. The reversal of 86620879 is 97802668.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86620879 - 2³ = 86620871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86620871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43310439 + 43310440.

It is an arithmetic number, because the mean of its divisors is an integer number (43310440).

Almost surely, 2^86620879 is an apocalyptic number.

86620879 is a deficient number, since it is larger than the sum of its proper divisors (1).

86620879 is an equidigital number, since it uses as much as digits as its factorization.

86620879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 86620879 is about 9307.0338454311. The cubic root of 86620879 is about 442.4601838902.

The spelling of 86620879 in words is "eighty-six million, six hundred twenty thousand, eight hundred seventy-nine".