86620799 has 2 divisors, whose sum is σ = 86620800. Its totient is φ = 86620798.

The previous prime is 86620777. The next prime is 86620813. The reversal of 86620799 is 99702668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86620799 - 2¹⁶ = 86555263 is a prime.

It is a Sophie Germain 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 (86620739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43310399 + 43310400.

It is an arithmetic number, because the mean of its divisors is an integer number (43310400).

Almost surely, 2^86620799 is an apocalyptic number.

86620799 is a deficient number, since it is larger than the sum of its proper divisors (1).

86620799 is an equidigital number, since it uses as much as digits as its factorization.

86620799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 86620799 is about 9307.0295476054. The cubic root of 86620799 is about 442.4600476766.

The spelling of 86620799 in words is "eighty-six million, six hundred twenty thousand, seven hundred ninety-nine".