561999914 has 12 divisors (see below), whose sum is σ = 980632674. Its totient is φ = 240857064.

The previous prime is 561999913. The next prime is 561999929. The reversal of 561999914 is 419999165.

561999914 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 487747225 + 74252689 = 22085^2 + 8617^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (561999913) 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, 2867249 + ... + 2867444.

Almost surely, 2^561999914 is an apocalyptic number.

561999914 is a deficient number, since it is larger than the sum of its proper divisors (418632760).

561999914 is a wasteful number, since it uses less digits than its factorization.

561999914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5734709 (or 5734702 counting only the distinct ones).

The product of its digits is 787320, while the sum is 53.

The square root of 561999914 is about 23706.5373684138. The cubic root of 561999914 is about 825.2371104200.

The spelling of 561999914 in words is "five hundred sixty-one million, nine hundred ninety-nine thousand, nine hundred fourteen".