90660 has 24 divisors (see below), whose sum is σ = 254016. Its totient is φ = 24160.

The previous prime is 90659. The next prime is 90677. The reversal of 90660 is 6609.

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, 696 + ... + 815.

It is an arithmetic number, because the mean of its divisors is an integer number (10584).

2⁹⁰⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

90660 is an abundant number, since it is smaller than the sum of its proper divisors (163356).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127008).

90660 is a wasteful number, since it uses less digits than its factorization.

90660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1521 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 90660 is about 301.0979906941. The cubic root of 90660 is about 44.9233262228.

The spelling of 90660 in words is "ninety thousand, six hundred sixty".