86616899 has 2 divisors, whose sum is σ = 86616900. Its totient is φ = 86616898.

The previous prime is 86616869. The next prime is 86616913. The reversal of 86616899 is 99861668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86616899 - 2¹⁶ = 86551363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86616899.

It is not a weakly prime, because it can be changed into another prime (86616809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43308449 + 43308450.

It is an arithmetic number, because the mean of its divisors is an integer number (43308450).

Almost surely, 2^86616899 is an apocalyptic number.

86616899 is a deficient number, since it is larger than the sum of its proper divisors (1).

86616899 is an equidigital number, since it uses as much as digits as its factorization.

86616899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 53.

The square root of 86616899 is about 9306.8200261958. The cubic root of 86616899 is about 442.4534071618.

The spelling of 86616899 in words is "eighty-six million, six hundred sixteen thousand, eight hundred ninety-nine".