866279 has 2 divisors, whose sum is σ = 866280. Its totient is φ = 866278.

The previous prime is 866231. The next prime is 866293. The reversal of 866279 is 972668.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866279 - 2¹⁶ = 800743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433139 + 433140.

It is an arithmetic number, because the mean of its divisors is an integer number (433140).

2⁸⁶⁶²⁷⁹ is an apocalyptic number.

866279 is a deficient number, since it is larger than the sum of its proper divisors (1).

866279 is an equidigital number, since it uses as much as digits as its factorization.

866279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 866279 is about 930.7411025629. The cubic root of 866279 is about 95.3277323501.

The spelling of 866279 in words is "eight hundred sixty-six thousand, two hundred seventy-nine".