852669569 has 2 divisors, whose sum is σ = 852669570. Its totient is φ = 852669568.

The previous prime is 852669557. The next prime is 852669583. The reversal of 852669569 is 965966258.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 480179569 + 372490000 = 21913^2 + 19300^2 .

It is a cyclic number.

It is not a de Polignac number, because 852669569 - 2⁴ = 852669553 is a prime.

It is a super-2 number, since 2×852669569² = 1454090787797291522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (852663569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426334784 + 426334785.

It is an arithmetic number, because the mean of its divisors is an integer number (426334785).

Almost surely, 2^852669569 is an apocalyptic number.

It is an amenable number.

852669569 is a deficient number, since it is larger than the sum of its proper divisors (1).

852669569 is an equidigital number, since it uses as much as digits as its factorization.

852669569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6998400, while the sum is 56.

The square root of 852669569 is about 29200.5063141035. The cubic root of 852669569 is about 948.2588862673.

The spelling of 852669569 in words is "eight hundred fifty-two million, six hundred sixty-nine thousand, five hundred sixty-nine".