561166597 has 8 divisors (see below), whose sum is σ = 572313600. Its totient is φ = 550040400.

The previous prime is 561166591. The next prime is 561166637. The reversal of 561166597 is 795661165.

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

It is a cyclic number.

It is not a de Polignac number, because 561166597 - 2³ = 561166589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561166591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56404 + ... + 65602.

It is an arithmetic number, because the mean of its divisors is an integer number (71539200).

Almost surely, 2^561166597 is an apocalyptic number.

It is an amenable number.

561166597 is a deficient number, since it is larger than the sum of its proper divisors (11147003).

561166597 is a wasteful number, since it uses less digits than its factorization.

561166597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10403.

The product of its digits is 340200, while the sum is 46.

The square root of 561166597 is about 23688.9551690234. The cubic root of 561166597 is about 824.8290295236.

The spelling of 561166597 in words is "five hundred sixty-one million, one hundred sixty-six thousand, five hundred ninety-seven".