561974436 has 63 divisors (see below), whose sum is σ = 1477874811. Its totient is φ = 186898104.

The previous prime is 561974431. The next prime is 561974453. The reversal of 561974436 is 634479165.

The square root of 561974436 is 23706.

It is a perfect power (a square), and thus also a powerful number.

It is a junction number, because it is equal to n+sod(n) for n = 561974391 and 561974400.

It is not an unprimeable number, because it can be changed into a prime (561974431) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 1279905 + ... + 1280343.

Almost surely, 2^561974436 is an apocalyptic number.

561974436 is the 23706-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561974436

561974436 is an abundant number, since it is smaller than the sum of its proper divisors (915900375).

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

561974436 is an frugal number, since it uses more digits than its factorization.

561974436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 444 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The cubic root of 561974436 is about 825.2246396537.

The spelling of 561974436 in words is "five hundred sixty-one million, nine hundred seventy-four thousand, four hundred thirty-six".