561999970 has 32 divisors (see below), whose sum is σ = 1159142400. Its totient is φ = 192181056.

The previous prime is 561999959. The next prime is 561999973. The reversal of 561999970 is 79999165.

561999970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (561999973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16911 + ... + 37549.

It is an arithmetic number, because the mean of its divisors is an integer number (36223200).

Almost surely, 2^561999970 is an apocalyptic number.

561999970 is an abundant number, since it is smaller than the sum of its proper divisors (597142430).

561999970 is a wasteful number, since it uses less digits than its factorization.

561999970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21042.

The product of its (nonzero) digits is 1377810, while the sum is 55.

The square root of 561999970 is about 23706.5385495226. The cubic root of 561999970 is about 825.2371378300.

The spelling of 561999970 in words is "five hundred sixty-one million, nine hundred ninety-nine thousand, nine hundred seventy".