505680556 has 24 divisors (see below), whose sum is σ = 923771520. Its totient is φ = 241929600.

The previous prime is 505680547. The next prime is 505680577. The reversal of 505680556 is 655086505.

It is a happy 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, 11875 + ... + 33946.

It is an arithmetic number, because the mean of its divisors is an integer number (38490480).

Almost surely, 2^505680556 is an apocalyptic number.

It is an amenable number.

505680556 is a deficient number, since it is larger than the sum of its proper divisors (418090964).

505680556 is a wasteful number, since it uses less digits than its factorization.

505680556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45945 (or 45943 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

The square root of 505680556 is about 22487.3421284064. The cubic root of 505680556 is about 796.6949878375.

The spelling of 505680556 in words is "five hundred five million, six hundred eighty thousand, five hundred fifty-six".