563390887 has 4 divisors (see below), whose sum is σ = 564071320. Its totient is φ = 562710456.

The previous prime is 563390879. The next prime is 563390929. The reversal of 563390887 is 788093365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788093365 = 5 ⋅157618673.

It is a cyclic number.

It is not a de Polignac number, because 563390887 - 2³ = 563390879 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 563390887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563390837) 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, 338973 + ... + 340630.

It is an arithmetic number, because the mean of its divisors is an integer number (141017830).

Almost surely, 2^563390887 is an apocalyptic number.

563390887 is a deficient number, since it is larger than the sum of its proper divisors (680433).

563390887 is an equidigital number, since it uses as much as digits as its factorization.

563390887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680432.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 563390887 is about 23735.8565676489. The cubic root of 563390887 is about 825.9173814733.

The spelling of 563390887 in words is "five hundred sixty-three million, three hundred ninety thousand, eight hundred eighty-seven".