557166663 has 6 divisors (see below), whose sum is σ = 804796304. Its totient is φ = 371444436.

The previous prime is 557166661. The next prime is 557166679. The reversal of 557166663 is 366661755.

It is not a de Polignac number, because 557166663 - 2¹ = 557166661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557166661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30953695 + ... + 30953712.

Almost surely, 2^557166663 is an apocalyptic number.

557166663 is a deficient number, since it is larger than the sum of its proper divisors (247629641).

557166663 is a wasteful number, since it uses less digits than its factorization.

557166663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61907413 (or 61907410 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 557166663 is about 23604.3780473030. The cubic root of 557166663 is about 822.8645910293.

The spelling of 557166663 in words is "five hundred fifty-seven million, one hundred sixty-six thousand, six hundred sixty-three".