865069 has 2 divisors, whose sum is σ = 865070. Its totient is φ = 865068.

The previous prime is 865061. The next prime is 865087. The reversal of 865069 is 960568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 169 = 930^2 + 13^2 .

It is a cyclic number.

It is not a de Polignac number, because 865069 - 2³ = 865061 is a prime.

It is a super-2 number, since 2×865069² = 1496688749522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865061) 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, 432534 + 432535.

It is an arithmetic number, because the mean of its divisors is an integer number (432535).

2⁸⁶⁵⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

865069 is a deficient number, since it is larger than the sum of its proper divisors (1).

865069 is an equidigital number, since it uses as much as digits as its factorization.

865069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 865069 is about 930.0908557770. The cubic root of 865069 is about 95.2833277559.

The spelling of 865069 in words is "eight hundred sixty-five thousand, sixty-nine".