90565660 has 24 divisors (see below), whose sum is σ = 190871856. Its totient is φ = 36096000.

The previous prime is 90565639. The next prime is 90565661. The reversal of 90565660 is 6656509.

It is a happy number.

It is a super-3 number, since 3×90565660³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90565661) 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, 2341 + ... + 13660.

It is an arithmetic number, because the mean of its divisors is an integer number (7952994).

Almost surely, 2^90565660 is an apocalyptic number.

It is an amenable number.

90565660 is an abundant number, since it is smaller than the sum of its proper divisors (100306196).

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

90565660 is a wasteful number, since it uses less digits than its factorization.

90565660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16293 (or 16291 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The square root of 90565660 is about 9516.5991824811. The cubic root of 90565660 is about 449.0773854181.

The spelling of 90565660 in words is "ninety million, five hundred sixty-five thousand, six hundred sixty".