561770496 has 234 divisors, whose sum is σ = 1893693672. Its totient is φ = 159989760.

The previous prime is 561770471. The next prime is 561770497. The reversal of 561770496 is 694077165.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561770497) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1806181 + ... + 1806491.

It is an arithmetic number, because the mean of its divisors is an integer number (8092708).

Almost surely, 2^561770496 is an apocalyptic number.

561770496 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561770496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (946846836).

561770496 is an abundant number, since it is smaller than the sum of its proper divisors (1331923176).

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

561770496 is a wasteful number, since it uses less digits than its factorization.

561770496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 561770496 is about 23701.6981670090. The cubic root of 561770496 is about 825.1248031578.

The spelling of 561770496 in words is "five hundred sixty-one million, seven hundred seventy thousand, four hundred ninety-six".