89666666 has 16 divisors (see below), whose sum is σ = 141501600. Its totient is φ = 42552048.

The previous prime is 89666657. The next prime is 89666677. The reversal of 89666666 is 66666698.

It is a super-2 number, since 2×89666666² = 16080221983111112, which contains 22 as substring.

89666666 is a modest number, since divided by 66666 gives 896 as remainder.

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, 9680 + ... + 16523.

It is an arithmetic number, because the mean of its divisors is an integer number (8843850).

Almost surely, 2^89666666 is an apocalyptic number.

89666666 is a deficient number, since it is larger than the sum of its proper divisors (51834934).

89666666 is a wasteful number, since it uses less digits than its factorization.

89666666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26293.

The product of its digits is 3359232, while the sum is 53.

The square root of 89666666 is about 9469.2484390262. The cubic root of 89666666 is about 447.5865292555.

The spelling of 89666666 in words is "eighty-nine million, six hundred sixty-six thousand, six hundred sixty-six".