86646618 has 16 divisors (see below), whose sum is σ = 192548160. Its totient is φ = 28882188.

The previous prime is 86646583. The next prime is 86646619. The reversal of 86646618 is 81664668.

It is not an unprimeable number, because it can be changed into a prime (86646619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 802230 + ... + 802337.

It is an arithmetic number, because the mean of its divisors is an integer number (12034260).

Almost surely, 2^86646618 is an apocalyptic number.

86646618 is an abundant number, since it is smaller than the sum of its proper divisors (105901542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86646618 is a wasteful number, since it uses less digits than its factorization.

86646618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604578 (or 1604572 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 86646618 is about 9308.4165141016. The cubic root of 86646618 is about 442.5040045601.

The spelling of 86646618 in words is "eighty-six million, six hundred forty-six thousand, six hundred eighteen".