556240669 has 2 divisors, whose sum is σ = 556240670. Its totient is φ = 556240668.

The previous prime is 556240661. The next prime is 556240709. The reversal of 556240669 is 966042655.

556240669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447872569 + 108368100 = 21163^2 + 10410^2 .

It is a cyclic number.

It is not a de Polignac number, because 556240669 - 2³ = 556240661 is a prime.

It is a super-2 number, since 2×556240669² = 618807363699135122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556240661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278120334 + 278120335.

It is an arithmetic number, because the mean of its divisors is an integer number (278120335).

Almost surely, 2^556240669 is an apocalyptic number.

It is an amenable number.

556240669 is a deficient number, since it is larger than the sum of its proper divisors (1).

556240669 is an equidigital number, since it uses as much as digits as its factorization.

556240669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 43.

The square root of 556240669 is about 23584.7550125075. The cubic root of 556240669 is about 822.4084796374.

The spelling of 556240669 in words is "five hundred fifty-six million, two hundred forty thousand, six hundred sixty-nine".