556207690 has 16 divisors (see below), whose sum is σ = 1004793192. Its totient is φ = 221678784.

The previous prime is 556207679. The next prime is 556207693. The reversal of 556207690 is 96702655.

It can be written as a sum of positive squares in 4 ways, for example, as 396766561 + 159441129 = 19919^2 + 12627^2 .

It is a super-2 number, since 2×556207690² = 618733988830272200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (556207693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97629 + ... + 103168.

Almost surely, 2^556207690 is an apocalyptic number.

556207690 is a deficient number, since it is larger than the sum of its proper divisors (448585502).

556207690 is a wasteful number, since it uses less digits than its factorization.

556207690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201081.

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

The square root of 556207690 is about 23584.0558428783. The cubic root of 556207690 is about 822.3922260342.

The spelling of 556207690 in words is "five hundred fifty-six million, two hundred seven thousand, six hundred ninety".