865049 has 2 divisors, whose sum is σ = 865050. Its totient is φ = 865048.

The previous prime is 865043. The next prime is 865057. The reversal of 865049 is 940568.

865049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 797449 + 67600 = 893^2 + 260^2 .

It is a cyclic number.

It is not a de Polignac number, because 865049 - 2⁸ = 864793 is a prime.

It is not a weakly prime, because it can be changed into another prime (865043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432524 + 432525.

It is an arithmetic number, because the mean of its divisors is an integer number (432525).

2⁸⁶⁵⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

865049 is a deficient number, since it is larger than the sum of its proper divisors (1).

865049 is an equidigital number, since it uses as much as digits as its factorization.

865049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 865049 is about 930.0801040771. The cubic root of 865049 is about 95.2825934479.

The spelling of 865049 in words is "eight hundred sixty-five thousand, forty-nine".