556425639 has 96 divisors (see below), whose sum is σ = 1072512000. Its totient is φ = 278752320.

The previous prime is 556425631. The next prime is 556425643. The reversal of 556425639 is 936524655.

556425639 is a `hidden beast` number, since 5 + 5 + 6 + 4 + 2 + 5 + 639 = 666.

It is not a de Polignac number, because 556425639 - 2³ = 556425631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 556425594 and 556425603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556425631) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 662782 + ... + 663620.

It is an arithmetic number, because the mean of its divisors is an integer number (11172000).

Almost surely, 2^556425639 is an apocalyptic number.

556425639 is a deficient number, since it is larger than the sum of its proper divisors (516086361).

556425639 is a wasteful number, since it uses less digits than its factorization.

556425639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906 (or 889 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 556425639 is about 23588.6760756088. The cubic root of 556425639 is about 822.4996296534.

The spelling of 556425639 in words is "five hundred fifty-six million, four hundred twenty-five thousand, six hundred thirty-nine".