563330987 has 4 divisors (see below), whose sum is σ = 564126240. Its totient is φ = 562535736.

The previous prime is 563330983. The next prime is 563331059. The reversal of 563330987 is 789033365.

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 563330987 - 2² = 563330983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (563330983) 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, 396563 + ... + 397980.

It is an arithmetic number, because the mean of its divisors is an integer number (141031560).

Almost surely, 2^563330987 is an apocalyptic number.

563330987 is a deficient number, since it is larger than the sum of its proper divisors (795253).

563330987 is an equidigital number, since it uses as much as digits as its factorization.

563330987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795252.

The product of its (nonzero) digits is 408240, while the sum is 44.

The square root of 563330987 is about 23734.5947300560. The cubic root of 563330987 is about 825.8881097866. Note that the first 3 decimals are identical.

The spelling of 563330987 in words is "five hundred sixty-three million, three hundred thirty thousand, nine hundred eighty-seven".