563643634 has 8 divisors (see below), whose sum is σ = 846459180. Its totient is φ = 281490576.

The previous prime is 563643629. The next prime is 563643713. The reversal of 563643634 is 436346365.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 546858225 + 16785409 = 23385^2 + 4097^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×563643634² = 635388292297451912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163489 + ... + 166900.

Almost surely, 2^563643634 is an apocalyptic number.

563643634 is a deficient number, since it is larger than the sum of its proper divisors (282815546).

563643634 is a wasteful number, since it uses less digits than its factorization.

563643634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331244.

The product of its digits is 466560, while the sum is 40.

The square root of 563643634 is about 23741.1801307349. The cubic root of 563643634 is about 826.0408700002.

Adding to 563643634 its reverse (436346365), we get a palindrome (999989999).

The spelling of 563643634 in words is "five hundred sixty-three million, six hundred forty-three thousand, six hundred thirty-four".