561152666 has 16 divisors (see below), whose sum is σ = 898755264. Its totient is φ = 262135104.

The previous prime is 561152659. The next prime is 561152687. The reversal of 561152666 is 666251165.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139871 + ... + 143826.

It is an arithmetic number, because the mean of its divisors is an integer number (56172204).

Almost surely, 2^561152666 is an apocalyptic number.

561152666 is a deficient number, since it is larger than the sum of its proper divisors (337602598).

561152666 is a wasteful number, since it uses less digits than its factorization.

561152666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283765.

The product of its digits is 64800, while the sum is 38.

The square root of 561152666 is about 23688.6611272144. The cubic root of 561152666 is about 824.8222039877.

The spelling of 561152666 in words is "five hundred sixty-one million, one hundred fifty-two thousand, six hundred sixty-six".