563997 has 16 divisors (see below), whose sum is σ = 870912. Its totient is φ = 318000.

The previous prime is 563987. The next prime is 563999. The reversal of 563997 is 799365.

563997 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 563997 - 2⁶ = 563933 is a prime.

It is an Ulam number.

563997 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2122 + ... + 2372.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2⁵⁶³⁹⁹⁷ is an apocalyptic number.

It is an amenable number.

563997 is a deficient number, since it is larger than the sum of its proper divisors (306915).

563997 is a wasteful number, since it uses less digits than its factorization.

563997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368.

The product of its digits is 51030, while the sum is 39.

The square root of 563997 is about 750.9973368794. The cubic root of 563997 is about 82.6213457644.

The spelling of 563997 in words is "five hundred sixty-three thousand, nine hundred ninety-seven".