90900606 has 16 divisors (see below), whose sum is σ = 183602448. Its totient is φ = 30000000.

The previous prime is 90900599. The next prime is 90900611. The reversal of 90900606 is 60600909.

90900606 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

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, 74395 + ... + 75606.

It is an arithmetic number, because the mean of its divisors is an integer number (11475153).

Almost surely, 2^90900606 is an apocalyptic number.

90900606 is an abundant number, since it is smaller than the sum of its proper divisors (92701842).

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

90900606 is a wasteful number, since it uses less digits than its factorization.

90900606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150107.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 90900606 is about 9534.1809296866. The cubic root of 90900606 is about 449.6303235533.

The spelling of 90900606 in words is "ninety million, nine hundred thousand, six hundred six".