563446840 has 32 divisors (see below), whose sum is σ = 1383006960. Its totient is φ = 204889600.

The previous prime is 563446831. The next prime is 563446853. The reversal of 563446840 is 48644365.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 563446793 and 563446802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639841 + ... + 640720.

Almost surely, 2^563446840 is an apocalyptic number.

It is an amenable number.

563446840 is an abundant number, since it is smaller than the sum of its proper divisors (819560120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

563446840 is a wasteful number, since it uses less digits than its factorization.

563446840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280583 (or 1280579 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The square root of 563446840 is about 23737.0351981877. The cubic root of 563446840 is about 825.9447224820.

The spelling of 563446840 in words is "five hundred sixty-three million, four hundred forty-six thousand, eight hundred forty".