89571818 has 16 divisors (see below), whose sum is σ = 153936960. Its totient is φ = 38291616.

The previous prime is 89571817. The next prime is 89571863. The reversal of 89571818 is 81817598.

It is a super-2 number, since 2×89571818² = 16046221159650248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89571817) 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, 2096 + ... + 13547.

It is an arithmetic number, because the mean of its divisors is an integer number (9621060).

Almost surely, 2^89571818 is an apocalyptic number.

89571818 is a deficient number, since it is larger than the sum of its proper divisors (64365142).

89571818 is a wasteful number, since it uses less digits than its factorization.

89571818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16061.

The product of its digits is 161280, while the sum is 47.

The square root of 89571818 is about 9464.2389023101. The cubic root of 89571818 is about 447.4286568954.

The spelling of 89571818 in words is "eighty-nine million, five hundred seventy-one thousand, eight hundred eighteen".