90666012 has 24 divisors (see below), whose sum is σ = 212170000. Its totient is φ = 30134016.

The previous prime is 90665999. The next prime is 90666019. The reversal of 90666012 is 21066609.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90666019) 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, 6637 + ... + 15012.

Almost surely, 2^90666012 is an apocalyptic number.

It is an amenable number.

90666012 is an abundant number, since it is smaller than the sum of its proper divisors (121503988).

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

90666012 is a wasteful number, since it uses less digits than its factorization.

90666012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22005 (or 22003 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90666012 is about 9521.8701944523. The cubic root of 90666012 is about 449.2431921151.

The spelling of 90666012 in words is "ninety million, six hundred sixty-six thousand, twelve".