556116637 has 4 divisors (see below), whose sum is σ = 558014940. Its totient is φ = 554218336.

The previous prime is 556116611. The next prime is 556116641. The reversal of 556116637 is 736611655.

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

It can be written as a sum of positive squares in 2 ways, for example, as 532409476 + 23707161 = 23074^2 + 4869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556116637 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 556116637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556116607) 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, 948712 + ... + 949297.

It is an arithmetic number, because the mean of its divisors is an integer number (139503735).

Almost surely, 2^556116637 is an apocalyptic number.

It is an amenable number.

556116637 is a deficient number, since it is larger than the sum of its proper divisors (1898303).

556116637 is a wasteful number, since it uses less digits than its factorization.

556116637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898302.

The product of its digits is 113400, while the sum is 40.

The square root of 556116637 is about 23582.1253707125. The cubic root of 556116637 is about 822.3473474950.

The spelling of 556116637 in words is "five hundred fifty-six million, one hundred sixteen thousand, six hundred thirty-seven".