873671569 has 2 divisors, whose sum is σ = 873671570. Its totient is φ = 873671568.

The previous prime is 873671563. The next prime is 873671581. The reversal of 873671569 is 965176378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 561690000 + 311981569 = 23700^2 + 17663^2 .

It is a cyclic number.

It is not a de Polignac number, because 873671569 - 2²⁵ = 840117137 is a prime.

It is a super-3 number, since 3×873671569³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (873671563) 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, 436835784 + 436835785.

It is an arithmetic number, because the mean of its divisors is an integer number (436835785).

Almost surely, 2^873671569 is an apocalyptic number.

It is an amenable number.

873671569 is a deficient number, since it is larger than the sum of its proper divisors (1).

873671569 is an equidigital number, since it uses as much as digits as its factorization.

873671569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 52.

The square root of 873671569 is about 29557.9358041119. The cubic root of 873671569 is about 955.9813086832.

The spelling of 873671569 in words is "eight hundred seventy-three million, six hundred seventy-one thousand, five hundred sixty-nine".