566442749 has 2 divisors, whose sum is σ = 566442750. Its totient is φ = 566442748.

The previous prime is 566442683. The next prime is 566442787. The reversal of 566442749 is 947244665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 444450724 + 121992025 = 21082^2 + 11045^2 .

It is a cyclic number.

It is not a de Polignac number, because 566442749 - 2²⁸ = 298007293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566442949) by changing a digit.

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 as a sum of consecutive naturals, namely, 283221374 + 283221375.

It is an arithmetic number, because the mean of its divisors is an integer number (283221375).

Almost surely, 2^566442749 is an apocalyptic number.

It is an amenable number.

566442749 is a deficient number, since it is larger than the sum of its proper divisors (1).

566442749 is an equidigital number, since it uses as much as digits as its factorization.

566442749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 47.

The square root of 566442749 is about 23800.0577520308. The cubic root of 566442749 is about 827.4060153145.

The spelling of 566442749 in words is "five hundred sixty-six million, four hundred forty-two thousand, seven hundred forty-nine".