85538618 has 16 divisors (see below), whose sum is σ = 140187456. Its totient is φ = 38821440.

The previous prime is 85538581. The next prime is 85538647. The reversal of 85538618 is 81683558.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13730 + ... + 18962.

It is an arithmetic number, because the mean of its divisors is an integer number (8761716).

Almost surely, 2^85538618 is an apocalyptic number.

85538618 is a deficient number, since it is larger than the sum of its proper divisors (54648838).

85538618 is a wasteful number, since it uses less digits than its factorization.

85538618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989.

The product of its digits is 230400, while the sum is 44.

The square root of 85538618 is about 9248.7089909890. The cubic root of 85538618 is about 440.6097228779.

It can be divided in two parts, 8553 and 8618, that added together give a palindrome (17171).

The spelling of 85538618 in words is "eighty-five million, five hundred thirty-eight thousand, six hundred eighteen".