561201696 has 168 divisors, whose sum is σ = 1807961904. Its totient is φ = 170061120.

The previous prime is 561201661. The next prime is 561201709. The reversal of 561201696 is 696102165.

561201696 is a `hidden beast` number, since 561 + 2 + 0 + 1 + 6 + 96 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 561201696.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 51018331 + ... + 51018341.

It is an arithmetic number, because the mean of its divisors is an integer number (10761678).

Almost surely, 2^561201696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561201696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (903980952).

561201696 is an abundant number, since it is smaller than the sum of its proper divisors (1246760208).

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

561201696 is an frugal number, since it uses more digits than its factorization.

561201696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60 (or 16 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 561201696 is about 23689.6959879185. The cubic root of 561201696 is about 824.8462258848.

The spelling of 561201696 in words is "five hundred sixty-one million, two hundred one thousand, six hundred ninety-six".