556755642 has 12 divisors (see below), whose sum is σ = 1206303930. Its totient is φ = 185585208.

The previous prime is 556755637. The next prime is 556755649. The reversal of 556755642 is 246557655.

556755642 is a `hidden beast` number, since 5 + 56 + 7 + 556 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 556440921 + 314721 = 23589^2 + 561^2 .

It is not an unprimeable number, because it can be changed into a prime (556755649) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15465417 + ... + 15465452.

Almost surely, 2^556755642 is an apocalyptic number.

556755642 is an abundant number, since it is smaller than the sum of its proper divisors (649548288).

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

556755642 is a wasteful number, since it uses less digits than its factorization.

556755642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30930877 (or 30930874 counting only the distinct ones).

The product of its digits is 1260000, while the sum is 45.

The square root of 556755642 is about 23595.6699841306. The cubic root of 556755642 is about 822.6621992673.

The spelling of 556755642 in words is "five hundred fifty-six million, seven hundred fifty-five thousand, six hundred forty-two".