866053 has 2 divisors, whose sum is σ = 866054. Its totient is φ = 866052.

The previous prime is 866051. The next prime is 866057. The reversal of 866053 is 350668.

866053 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., 859329 + 6724 = 927^2 + 82^2 .

It is a cyclic number.

It is not a de Polignac number, because 866053 - 2¹ = 866051 is a prime.

Together with 866051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433026 + 433027.

It is an arithmetic number, because the mean of its divisors is an integer number (433027).

2⁸⁶⁶⁰⁵³ is an apocalyptic number.

It is an amenable number.

866053 is a deficient number, since it is larger than the sum of its proper divisors (1).

866053 is an equidigital number, since it uses as much as digits as its factorization.

866053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 866053 is about 930.6196860157. The cubic root of 866053 is about 95.3194417411.

The spelling of 866053 in words is "eight hundred sixty-six thousand, fifty-three".