561130066 has 24 divisors (see below), whose sum is σ = 979942860. Its totient is φ = 240280992.

The previous prime is 561130013. The next prime is 561130079. The reversal of 561130066 is 660031165.

It can be written as a sum of positive squares in 2 ways, for example, as 558140625 + 2989441 = 23625^2 + 1729^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 199800 + ... + 202588.

Almost surely, 2^561130066 is an apocalyptic number.

561130066 is a deficient number, since it is larger than the sum of its proper divisors (418812794).

561130066 is a wasteful number, since it uses less digits than its factorization.

561130066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858 (or 4851 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 561130066 is about 23688.1841009394. The cubic root of 561130066 is about 824.8111308085.

The spelling of 561130066 in words is "five hundred sixty-one million, one hundred thirty thousand, sixty-six".