504478656 has 84 divisors (see below), whose sum is σ = 1577471064. Its totient is φ = 152870400.

The previous prime is 504478651. The next prime is 504478661. The reversal of 504478656 is 656874405.

It is an interprime number because it is at equal distance from previous prime (504478651) and next prime (504478661).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (504478651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33475 + ... + 46146.

Almost surely, 2^504478656 is an apocalyptic number.

It is an amenable number.

504478656 is an abundant number, since it is smaller than the sum of its proper divisors (1072992408).

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

504478656 is a wasteful number, since it uses less digits than its factorization.

504478656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79650 (or 79637 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The square root of 504478656 is about 22460.6023071511. The cubic root of 504478656 is about 796.0632930321.

The spelling of 504478656 in words is "five hundred four million, four hundred seventy-eight thousand, six hundred fifty-six".