561431695 has 8 divisors (see below), whose sum is σ = 734965200. Its totient is φ = 408313920.

The previous prime is 561431687. The next prime is 561431699. The reversal of 561431695 is 596134165.

It is a happy number.

561431695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 561431695 - 2³ = 561431687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561431699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5103870 + ... + 5103979.

It is an arithmetic number, because the mean of its divisors is an integer number (91870650).

Almost surely, 2^561431695 is an apocalyptic number.

561431695 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

561431695 is a deficient number, since it is larger than the sum of its proper divisors (173533505).

561431695 is a wasteful number, since it uses less digits than its factorization.

561431695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207865.

The product of its digits is 97200, while the sum is 40.

The square root of 561431695 is about 23694.5499007683. The cubic root of 561431695 is about 824.9588935748.

The spelling of 561431695 in words is "five hundred sixty-one million, four hundred thirty-one thousand, six hundred ninety-five".