556679983 has 4 divisors (see below), whose sum is σ = 562191768. Its totient is φ = 551168200.

The previous prime is 556679957. The next prime is 556679987. The reversal of 556679983 is 389976655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556679983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556679987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755741 + ... + 2755942.

It is an arithmetic number, because the mean of its divisors is an integer number (140547942).

Almost surely, 2^556679983 is an apocalyptic number.

556679983 is a deficient number, since it is larger than the sum of its proper divisors (5511785).

556679983 is a wasteful number, since it uses less digits than its factorization.

556679983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511784.

The product of its digits is 12247200, while the sum is 58.

The square root of 556679983 is about 23594.0666905898. The cubic root of 556679983 is about 822.6249329969.

The spelling of 556679983 in words is "five hundred fifty-six million, six hundred seventy-nine thousand, nine hundred eighty-three".