566761985 has 8 divisors (see below), whose sum is σ = 680983296. Its totient is φ = 452830320.

The previous prime is 566761981. The next prime is 566762029. The reversal of 566761985 is 589167665.

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

It is not a de Polignac number, because 566761985 - 2² = 566761981 is a prime.

It is a super-2 number, since 2×566761985² = 642438295282280450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566761981) 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, 68081 + ... + 75950.

It is an arithmetic number, because the mean of its divisors is an integer number (85122912).

Almost surely, 2^566761985 is an apocalyptic number.

It is an amenable number.

566761985 is a deficient number, since it is larger than the sum of its proper divisors (114221311).

566761985 is a wasteful number, since it uses less digits than its factorization.

566761985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144823.

The product of its digits is 2721600, while the sum is 53.

The square root of 566761985 is about 23806.7634297483. The cubic root of 566761985 is about 827.5614227125.

The spelling of 566761985 in words is "five hundred sixty-six million, seven hundred sixty-one thousand, nine hundred eighty-five".