900504690 has 16 divisors (see below), whose sum is σ = 2161211328. Its totient is φ = 240134576.

The previous prime is 900504679. The next prime is 900504727. The reversal of 900504690 is 96405009.

It is a happy number.

It is a super-2 number, since 2×900504690² = 1621817393423992200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon 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, 15008382 + ... + 15008441.

It is an arithmetic number, because the mean of its divisors is an integer number (135075708).

Almost surely, 2^900504690 is an apocalyptic number.

900504690 is an abundant number, since it is smaller than the sum of its proper divisors (1260706638).

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

900504690 is a wasteful number, since it uses less digits than its factorization.

900504690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30016833.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 900504690 is about 30008.4103211083. The cubic root of 900504690 is about 965.6698223033.

Adding to 900504690 its reverse (96405009), we get a palindrome (996909699).

The spelling of 900504690 in words is "nine hundred million, five hundred four thousand, six hundred ninety".