89881668 has 36 divisors (see below), whose sum is σ = 227550960. Its totient is φ = 29914416.

The previous prime is 89881667. The next prime is 89881699. The reversal of 89881668 is 86618898.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (89881667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28263 + ... + 31281.

It is an arithmetic number, because the mean of its divisors is an integer number (6320860).

Almost surely, 2^89881668 is an apocalyptic number.

It is an amenable number.

89881668 is an abundant number, since it is smaller than the sum of its proper divisors (137669292).

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

89881668 is a wasteful number, since it uses less digits than its factorization.

89881668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3851 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 89881668 is about 9480.5942851701. The cubic root of 89881668 is about 447.9439834830.

The spelling of 89881668 in words is "eighty-nine million, eight hundred eighty-one thousand, six hundred sixty-eight".