556457663 has 2 divisors, whose sum is σ = 556457664. Its totient is φ = 556457662.

The previous prime is 556457641. The next prime is 556457687. The reversal of 556457663 is 366754655.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 556457663 - 2⁶ = 556457599 is a prime.

It is a super-2 number, since 2×556457663² = 619290261422843138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (556457063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278228831 + 278228832.

It is an arithmetic number, because the mean of its divisors is an integer number (278228832).

Almost surely, 2^556457663 is an apocalyptic number.

556457663 is a deficient number, since it is larger than the sum of its proper divisors (1).

556457663 is an equidigital number, since it uses as much as digits as its factorization.

556457663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268000, while the sum is 47.

The square root of 556457663 is about 23589.3548661255. The cubic root of 556457663 is about 822.5154084751.

The spelling of 556457663 in words is "five hundred fifty-six million, four hundred fifty-seven thousand, six hundred sixty-three".