563606989 has 6 divisors (see below), whose sum is σ = 619502030. Its totient is φ = 512369880.

The previous prime is 563606983. The next prime is 563606993. The reversal of 563606989 is 989606365.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 560884489 + 2722500 = 23683^2 + 1650^2 .

It is not a de Polignac number, because 563606989 - 2¹¹ = 563604941 is a prime.

It is a super-2 number, since 2×563606989² = 635305676099292242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563606983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2328834 + ... + 2329075.

Almost surely, 2^563606989 is an apocalyptic number.

It is an amenable number.

563606989 is a deficient number, since it is larger than the sum of its proper divisors (55895041).

563606989 is a wasteful number, since it uses less digits than its factorization.

563606989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657931 (or 4657920 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 52.

The square root of 563606989 is about 23740.4083579032. The cubic root of 563606989 is about 826.0229680719.

The spelling of 563606989 in words is "five hundred sixty-three million, six hundred six thousand, nine hundred eighty-nine".