556432646 has 16 divisors (see below), whose sum is σ = 1040601600. Its totient is φ = 216791880.

The previous prime is 556432633. The next prime is 556432663. The reversal of 556432646 is 646234655.

It is a happy number.

It is a super-3 number, since 3×556432646³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 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 7 ways as a sum of consecutive naturals, for example, 1806446 + ... + 1806753.

It is an arithmetic number, because the mean of its divisors is an integer number (65037600).

Almost surely, 2^556432646 is an apocalyptic number.

556432646 is a deficient number, since it is larger than the sum of its proper divisors (484168954).

556432646 is a wasteful number, since it uses less digits than its factorization.

556432646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613219.

The product of its digits is 518400, while the sum is 41.

The square root of 556432646 is about 23588.8245997973. The cubic root of 556432646 is about 822.5030821847.

The spelling of 556432646 in words is "five hundred fifty-six million, four hundred thirty-two thousand, six hundred forty-six".