516603663 has 14 divisors (see below), whose sum is σ = 774552264. Its totient is φ = 344401956.

The previous prime is 516603653. The next prime is 516603671. The reversal of 516603663 is 366306615.

It is a happy number.

It is not a de Polignac number, because 516603663 - 2⁵ = 516603631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516603613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 353595 + ... + 355052.

Almost surely, 2^516603663 is an apocalyptic number.

516603663 is a deficient number, since it is larger than the sum of its proper divisors (257948601).

516603663 is an frugal number, since it uses more digits than its factorization.

516603663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708665 (or 708650 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 516603663 is about 22728.9168901644. The cubic root of 516603663 is about 802.3905903772.

The spelling of 516603663 in words is "five hundred sixteen million, six hundred three thousand, six hundred sixty-three".