86210618 has 24 divisors (see below), whose sum is σ = 143466876. Its totient is φ = 38812800.

The previous prime is 86210609. The next prime is 86210639. The reversal of 86210618 is 81601268.

It can be written as a sum of positive squares in 6 ways, for example, as 2798929 + 83411689 = 1673^2 + 9133^2 .

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 10748 + ... + 16968.

Almost surely, 2^86210618 is an apocalyptic number.

86210618 is a deficient number, since it is larger than the sum of its proper divisors (57256258).

86210618 is a wasteful number, since it uses less digits than its factorization.

86210618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6290 (or 6277 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 86210618 is about 9284.9673128127. The cubic root of 86210618 is about 441.7605392651.

The spelling of 86210618 in words is "eighty-six million, two hundred ten thousand, six hundred eighteen".