89571666 has 16 divisors (see below), whose sum is σ = 183309984. Its totient is φ = 29162784.

The previous prime is 89571659. The next prime is 89571689. The reversal of 89571666 is 66617598.

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, 173331 + ... + 173846.

It is an arithmetic number, because the mean of its divisors is an integer number (11456874).

Almost surely, 2^89571666 is an apocalyptic number.

89571666 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

89571666 is an abundant number, since it is smaller than the sum of its proper divisors (93738318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89571666 is a wasteful number, since it uses less digits than its factorization.

89571666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347225.

The product of its digits is 544320, while the sum is 48.

The square root of 89571666 is about 9464.2308720783. The cubic root of 89571666 is about 447.4284038054.

The spelling of 89571666 in words is "eighty-nine million, five hundred seventy-one thousand, six hundred sixty-six".