555598663 has 4 divisors (see below), whose sum is σ = 555898120. Its totient is φ = 555299208.

The previous prime is 555598651. The next prime is 555598723. The reversal of 555598663 is 366895555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 555598663 - 2¹³ = 555590471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 555598663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555598363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146928 + ... + 150661.

It is an arithmetic number, because the mean of its divisors is an integer number (138974530).

Almost surely, 2^555598663 is an apocalyptic number.

555598663 is a deficient number, since it is larger than the sum of its proper divisors (299457).

555598663 is a wasteful number, since it uses less digits than its factorization.

555598663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299456.

The product of its digits is 4860000, while the sum is 52.

The square root of 555598663 is about 23571.1404688021. The cubic root of 555598663 is about 822.0919533136.

The spelling of 555598663 in words is "five hundred fifty-five million, five hundred ninety-eight thousand, six hundred sixty-three".