556703663 has 2 divisors, whose sum is σ = 556703664. Its totient is φ = 556703662.

The previous prime is 556703639. The next prime is 556703683. The reversal of 556703663 is 366307655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 556703663 - 2¹⁸ = 556441519 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 556703663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556703683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278351831 + 278351832.

It is an arithmetic number, because the mean of its divisors is an integer number (278351832).

Almost surely, 2^556703663 is an apocalyptic number.

556703663 is a deficient number, since it is larger than the sum of its proper divisors (1).

556703663 is an equidigital number, since it uses as much as digits as its factorization.

556703663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 41.

The square root of 556703663 is about 23594.5685063321. The cubic root of 556703663 is about 822.6365970785.

The spelling of 556703663 in words is "five hundred fifty-six million, seven hundred three thousand, six hundred sixty-three".