555655663 has 2 divisors, whose sum is σ = 555655664. Its totient is φ = 555655662.

The previous prime is 555655651. The next prime is 555655699. The reversal of 555655663 is 366556555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 555655663 - 2¹³ = 555647471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555655613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277827831 + 277827832.

It is an arithmetic number, because the mean of its divisors is an integer number (277827832).

Almost surely, 2^555655663 is an apocalyptic number.

555655663 is a deficient number, since it is larger than the sum of its proper divisors (1).

555655663 is an equidigital number, since it uses as much as digits as its factorization.

555655663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2025000, while the sum is 46.

The square root of 555655663 is about 23572.3495434800. The cubic root of 555655663 is about 822.1200657156.

The spelling of 555655663 in words is "five hundred fifty-five million, six hundred fifty-five thousand, six hundred sixty-three".