89663666 has 8 divisors (see below), whose sum is σ = 134552064. Its totient is φ = 44812980.

The previous prime is 89663647. The next prime is 89663681. The reversal of 89663666 is 66636698.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2450 + ... + 13613.

It is an arithmetic number, because the mean of its divisors is an integer number (16819008).

Almost surely, 2^89663666 is an apocalyptic number.

89663666 is a deficient number, since it is larger than the sum of its proper divisors (44888398).

89663666 is a wasteful number, since it uses less digits than its factorization.

89663666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18856.

The product of its digits is 1679616, while the sum is 50.

The square root of 89663666 is about 9469.0900301983. The cubic root of 89663666 is about 447.5815375284.

The spelling of 89663666 in words is "eighty-nine million, six hundred sixty-three thousand, six hundred sixty-six".