560028661 has 6 divisors (see below), whose sum is σ = 563443062. Its totient is φ = 556617960.

The previous prime is 560028659. The next prime is 560028701. The reversal of 560028661 is 166820065.

It can be written as a sum of positive squares in only one way, i.e., 309408100 + 250620561 = 17590^2 + 15831^2 .

It is not a de Polignac number, because 560028661 - 2¹ = 560028659 is a prime.

It is a super-2 number, since 2×560028661² = 627264202282905842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (560028611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 317500 + ... + 319258.

It is an arithmetic number, because the mean of its divisors is an integer number (93907177).

Almost surely, 2^560028661 is an apocalyptic number.

It is an amenable number.

560028661 is a deficient number, since it is larger than the sum of its proper divisors (3414401).

560028661 is an frugal number, since it uses more digits than its factorization.

560028661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699 (or 1940 counting only the distinct ones).

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

The square root of 560028661 is about 23664.9246988027. The cubic root of 560028661 is about 824.2711216454.

The spelling of 560028661 in words is "five hundred sixty million, twenty-eight thousand, six hundred sixty-one".