89661508 has 24 divisors (see below), whose sum is σ = 161566272. Its totient is φ = 43506144.

The previous prime is 89661503. The next prime is 89661511. The reversal of 89661508 is 80516698.

It is not an unprimeable number, because it can be changed into a prime (89661503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100641 + ... + 101527.

It is an arithmetic number, because the mean of its divisors is an integer number (6731928).

Almost surely, 2^89661508 is an apocalyptic number.

It is an amenable number.

89661508 is a deficient number, since it is larger than the sum of its proper divisors (71904764).

89661508 is a wasteful number, since it uses less digits than its factorization.

89661508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 1609 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 89661508 is about 9468.9760798093. The cubic root of 89661508 is about 447.5779467439.

The spelling of 89661508 in words is "eighty-nine million, six hundred sixty-one thousand, five hundred eight".