561702168 has 256 divisors, whose sum is σ = 1778112000. Its totient is φ = 163233792.

The previous prime is 561702133. The next prime is 561702209. The reversal of 561702168 is 861207165.

561702168 is a `hidden beast` number, since 561 + 70 + 21 + 6 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5790696 + ... + 5790792.

It is an arithmetic number, because the mean of its divisors is an integer number (6945750).

Almost surely, 2^561702168 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 561702168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (889056000).

561702168 is an abundant number, since it is smaller than the sum of its proper divisors (1216409832).

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

561702168 is a wasteful number, since it uses less digits than its factorization.

561702168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 561702168 is about 23700.2567074705. The cubic root of 561702168 is about 825.0913485627.

The spelling of 561702168 in words is "five hundred sixty-one million, seven hundred two thousand, one hundred sixty-eight".