563666365 has 8 divisors (see below), whose sum is σ = 716187960. Its totient is φ = 424407552.

The previous prime is 563666357. The next prime is 563666381.

563666365 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 9205156 + 554461209 = 3034^2 + 23547^2 .

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 563666365 - 2³ = 563666357 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3315600 + ... + 3315769.

It is an arithmetic number, because the mean of its divisors is an integer number (89523495).

Almost surely, 2^563666365 is an apocalyptic number.

It is an amenable number.

563666365 is a deficient number, since it is larger than the sum of its proper divisors (152521595).

563666365 is a wasteful number, since it uses less digits than its factorization.

563666365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6631391.

The product of its digits is 1749600, while the sum is 46.

The square root of 563666365 is about 23741.6588510576. The cubic root of 563666365 is about 826.0519742284.

The spelling of 563666365 in words is "five hundred sixty-three million, six hundred sixty-six thousand, three hundred sixty-five".