89666616 has 32 divisors (see below), whose sum is σ = 241410960. Its totient is φ = 27589632.

The previous prime is 89666609. The next prime is 89666617. The reversal of 89666616 is 61666698.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89666617) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 143385 + ... + 144008.

Almost surely, 2^89666616 is an apocalyptic number.

It is an amenable number.

89666616 is an abundant number, since it is smaller than the sum of its proper divisors (151744344).

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

89666616 is a wasteful number, since it uses less digits than its factorization.

89666616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287415 (or 287411 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 89666616 is about 9469.2457989008. The cubic root of 89666616 is about 447.5864460609.

The spelling of 89666616 in words is "eighty-nine million, six hundred sixty-six thousand, six hundred sixteen".