564286981 has 2 divisors, whose sum is σ = 564286982. Its totient is φ = 564286980.

The previous prime is 564286969. The next prime is 564286999. The reversal of 564286981 is 189682465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362902500 + 201384481 = 19050^2 + 14191^2 .

It is a cyclic number.

It is not a de Polignac number, because 564286981 - 2⁹ = 564286469 is a prime.

It is a super-2 number, since 2×564286981² = 636839593852188722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (564286951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282143490 + 282143491.

It is an arithmetic number, because the mean of its divisors is an integer number (282143491).

Almost surely, 2^564286981 is an apocalyptic number.

It is an amenable number.

564286981 is a deficient number, since it is larger than the sum of its proper divisors (1).

564286981 is an equidigital number, since it uses as much as digits as its factorization.

564286981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 49.

The square root of 564286981 is about 23754.7254456876. The cubic root of 564286981 is about 826.3550335477.

The spelling of 564286981 in words is "five hundred sixty-four million, two hundred eighty-six thousand, nine hundred eighty-one".