561912896 has 28 divisors (see below), whose sum is σ = 1117175820. Its totient is φ = 280419840.

The previous prime is 561912893. The next prime is 561912929. The reversal of 561912896 is 698219165.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 421727296 + 140185600 = 20536^2 + 11840^2 .

It is a super-2 number, since 2×561912896² = 631492205382213632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561912896.

It is not an unprimeable number, because it can be changed into a prime (561912893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26510 + ... + 42738.

Almost surely, 2^561912896 is an apocalyptic number.

It is an amenable number.

561912896 is a deficient number, since it is larger than the sum of its proper divisors (555262924).

561912896 is a wasteful number, since it uses less digits than its factorization.

561912896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16782 (or 16772 counting only the distinct ones).

The product of its digits is 233280, while the sum is 47.

The square root of 561912896 is about 23704.7019808307. The cubic root of 561912896 is about 825.1945159950.

The spelling of 561912896 in words is "five hundred sixty-one million, nine hundred twelve thousand, eight hundred ninety-six".