561066634 has 8 divisors (see below), whose sum is σ = 841724928. Its totient is φ = 280491660.

The previous prime is 561066619. The next prime is 561066677. The reversal of 561066634 is 436660165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 561066593 and 561066602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289 + ... + 33499.

It is an arithmetic number, because the mean of its divisors is an integer number (105215616).

Almost surely, 2^561066634 is an apocalyptic number.

561066634 is a deficient number, since it is larger than the sum of its proper divisors (280658294).

561066634 is a wasteful number, since it uses less digits than its factorization.

561066634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41660.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 561066634 is about 23686.8451677297. The cubic root of 561066634 is about 824.7800498439.

The spelling of 561066634 in words is "five hundred sixty-one million, sixty-six thousand, six hundred thirty-four".