563532661 has 2 divisors, whose sum is σ = 563532662. Its totient is φ = 563532660.

The previous prime is 563532583. The next prime is 563532667. The reversal of 563532661 is 166235365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 502208100 + 61324561 = 22410^2 + 7831^2 .

It is a cyclic number.

It is not a de Polignac number, because 563532661 - 2⁹ = 563532149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 563532661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563532667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281766330 + 281766331.

It is an arithmetic number, because the mean of its divisors is an integer number (281766331).

Almost surely, 2^563532661 is an apocalyptic number.

It is an amenable number.

563532661 is a deficient number, since it is larger than the sum of its proper divisors (1).

563532661 is an equidigital number, since it uses as much as digits as its factorization.

563532661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 37.

The square root of 563532661 is about 23738.8428740745. The cubic root of 563532661 is about 825.9866547451.

The spelling of 563532661 in words is "five hundred sixty-three million, five hundred thirty-two thousand, six hundred sixty-one".