86309618 has 4 divisors (see below), whose sum is σ = 129464430. Its totient is φ = 43154808.

The previous prime is 86309617. The next prime is 86309621. The reversal of 86309618 is 81690368.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 50225569 + 36084049 = 7087^2 + 6007^2 .

It is not an unprimeable number, because it can be changed into a prime (86309617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21577403 + ... + 21577406.

Almost surely, 2^86309618 is an apocalyptic number.

86309618 is a deficient number, since it is larger than the sum of its proper divisors (43154812).

86309618 is a wasteful number, since it uses less digits than its factorization.

86309618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43154811.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 86309618 is about 9290.2969812595. The cubic root of 86309618 is about 441.9295732129.

The spelling of 86309618 in words is "eighty-six million, three hundred nine thousand, six hundred eighteen".