556623988 has 12 divisors (see below), whose sum is σ = 982713060. Its totient is φ = 275848832.

The previous prime is 556623959. The next prime is 556624027. The reversal of 556623988 is 889326655.

It can be written as a sum of positive squares in 2 ways, for example, as 114447204 + 442176784 = 10698^2 + 21028^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615283 + ... + 616186.

It is an arithmetic number, because the mean of its divisors is an integer number (81892755).

Almost surely, 2^556623988 is an apocalyptic number.

It is an amenable number.

556623988 is a deficient number, since it is larger than the sum of its proper divisors (426089072).

556623988 is a wasteful number, since it uses less digits than its factorization.

556623988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231586 (or 1231584 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The square root of 556623988 is about 23592.8800276694. The cubic root of 556623988 is about 822.5973501671.

The spelling of 556623988 in words is "five hundred fifty-six million, six hundred twenty-three thousand, nine hundred eighty-eight".