505898904 has 64 divisors (see below), whose sum is σ = 1448605440. Its totient is φ = 144224640.

The previous prime is 505898879. The next prime is 505898917. The reversal of 505898904 is 409898505.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79422 + ... + 85554.

It is an arithmetic number, because the mean of its divisors is an integer number (22634460).

Almost surely, 2^505898904 is an apocalyptic number.

It is an amenable number.

505898904 is an abundant number, since it is smaller than the sum of its proper divisors (942706536).

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

505898904 is a wasteful number, since it uses less digits than its factorization.

505898904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640 (or 6636 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 48.

The square root of 505898904 is about 22492.1965134577. The cubic root of 505898904 is about 796.8096397481.

The spelling of 505898904 in words is "five hundred five million, eight hundred ninety-eight thousand, nine hundred four".