561147696 has 160 divisors (see below), whose sum is σ = 1723550400. Its totient is φ = 174182400.

The previous prime is 561147683. The next prime is 561147701. The reversal of 561147696 is 696741165.

561147696 is a `hidden beast` number, since 561 + 14 + 76 + 9 + 6 = 666.

It is a super-2 number, since 2×561147696² = 629773473452216832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 800146 + ... + 800846.

It is an arithmetic number, because the mean of its divisors is an integer number (10772190).

Almost surely, 2^561147696 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 561147696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (861775200).

561147696 is an abundant number, since it is smaller than the sum of its proper divisors (1162402704).

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

561147696 is a wasteful number, since it uses less digits than its factorization.

561147696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 832 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 561147696 is about 23688.5562244726. The cubic root of 561147696 is about 824.8197688937.

The spelling of 561147696 in words is "five hundred sixty-one million, one hundred forty-seven thousand, six hundred ninety-six".