86135618 has 4 divisors (see below), whose sum is σ = 129203430. Its totient is φ = 43067808.

The previous prime is 86135611. The next prime is 86135627. The reversal of 86135618 is 81653168.

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., 77915929 + 8219689 = 8827^2 + 2867^2 .

It is not an unprimeable number, because it can be changed into a prime (86135611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21533903 + ... + 21533906.

Almost surely, 2^86135618 is an apocalyptic number.

86135618 is a deficient number, since it is larger than the sum of its proper divisors (43067812).

86135618 is a wasteful number, since it uses less digits than its factorization.

86135618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43067811.

The product of its digits is 34560, while the sum is 38.

The square root of 86135618 is about 9280.9276476008. The cubic root of 86135618 is about 441.6323970721.

The spelling of 86135618 in words is "eighty-six million, one hundred thirty-five thousand, six hundred eighteen".