563623217 has 2 divisors, whose sum is σ = 563623218. Its totient is φ = 563623216.

The previous prime is 563623199. The next prime is 563623243. The reversal of 563623217 is 712326365.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 562590961 + 1032256 = 23719^2 + 1016^2 .

It is a cyclic number.

It is not a de Polignac number, because 563623217 - 2⁶ = 563623153 is a prime.

It is a super-2 number, since 2×563623217² = 635342261482858178, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (563623517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281811608 + 281811609.

It is an arithmetic number, because the mean of its divisors is an integer number (281811609).

Almost surely, 2^563623217 is an apocalyptic number.

It is an amenable number.

563623217 is a deficient number, since it is larger than the sum of its proper divisors (1).

563623217 is an equidigital number, since it uses as much as digits as its factorization.

563623217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 35.

The square root of 563623217 is about 23740.7501355791. The cubic root of 563623217 is about 826.0308959202.

The spelling of 563623217 in words is "five hundred sixty-three million, six hundred twenty-three thousand, two hundred seventeen".