85866418 has 24 divisors (see below), whose sum is σ = 144459504. Its totient is φ = 37962000.

The previous prime is 85866401. The next prime is 85866421. The reversal of 85866418 is 81466858.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28693 + ... + 31543.

It is an arithmetic number, because the mean of its divisors is an integer number (6019146).

Almost surely, 2^85866418 is an apocalyptic number.

85866418 is a deficient number, since it is larger than the sum of its proper divisors (58593086).

85866418 is a wasteful number, since it uses less digits than its factorization.

85866418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938 (or 2901 counting only the distinct ones).

The product of its digits is 368640, while the sum is 46.

The square root of 85866418 is about 9266.4134377870. The cubic root of 85866418 is about 441.1718384294.

It can be divided in two parts, 858 and 66418, that added together give a palindrome (67276).

The spelling of 85866418 in words is "eighty-five million, eight hundred sixty-six thousand, four hundred eighteen".