561840368 has 20 divisors (see below), whose sum is σ = 1089956280. Its totient is φ = 280561344.

The previous prime is 561840341. The next prime is 561840371. The reversal of 561840368 is 863048165.

It is a super-2 number, since 2×561840368² = 631329198228750848, which contains 22 as substring.

It is a congruent number.

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, 9278 + ... + 34781.

It is an arithmetic number, because the mean of its divisors is an integer number (54497814).

Almost surely, 2^561840368 is an apocalyptic number.

It is an amenable number.

561840368 is a deficient number, since it is larger than the sum of its proper divisors (528115912).

561840368 is a wasteful number, since it uses less digits than its factorization.

561840368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44864 (or 44858 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 561840368 is about 23703.1721083909. The cubic root of 561840368 is about 825.1590109174.

The spelling of 561840368 in words is "five hundred sixty-one million, eight hundred forty thousand, three hundred sixty-eight".