561717653 has 8 divisors (see below), whose sum is σ = 675750720. Its totient is φ = 456131520.

The previous prime is 561717647. The next prime is 561717677. The reversal of 561717653 is 356717165.

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 561717653 - 2²⁴ = 544940437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561717653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561717353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2111588 + ... + 2111853.

It is an arithmetic number, because the mean of its divisors is an integer number (84468840).

Almost surely, 2^561717653 is an apocalyptic number.

It is an amenable number.

561717653 is a deficient number, since it is larger than the sum of its proper divisors (114033067).

561717653 is a wasteful number, since it uses less digits than its factorization.

561717653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4223467.

The product of its digits is 132300, while the sum is 41.

The square root of 561717653 is about 23700.5833894442. The cubic root of 561717653 is about 825.0989305298.

The spelling of 561717653 in words is "five hundred sixty-one million, seven hundred seventeen thousand, six hundred fifty-three".