561662080 has 64 divisors (see below), whose sum is σ = 1534553280. Its totient is φ = 192568320.

The previous prime is 561662069. The next prime is 561662089. The reversal of 561662080 is 80266165.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (561662089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58206 + ... + 67165.

It is an arithmetic number, because the mean of its divisors is an integer number (23977395).

Almost surely, 2^561662080 is an apocalyptic number.

It is an amenable number.

561662080 is an abundant number, since it is smaller than the sum of its proper divisors (972891200).

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

561662080 is a wasteful number, since it uses less digits than its factorization.

561662080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125397 (or 125385 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 561662080 is about 23699.4109631442. The cubic root of 561662080 is about 825.0717195073.

The spelling of 561662080 in words is "five hundred sixty-one million, six hundred sixty-two thousand, eighty".