827866 has 16 divisors (see below), whose sum is σ = 1416744. Its totient is φ = 359424.

The previous prime is 827857. The next prime is 827867. The reversal of 827866 is 668728.

827866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 442225 + 385641 = 665^2 + 621^2 .

It is a super-2 number, since 2×827866² = 1370724227912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (827867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495 + ... + 1378.

2⁸²⁷⁸⁶⁶ is an apocalyptic number.

827866 is a deficient number, since it is larger than the sum of its proper divisors (588878).

827866 is a wasteful number, since it uses less digits than its factorization.

827866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905.

The product of its digits is 32256, while the sum is 37.

The square root of 827866 is about 909.8714194874. The cubic root of 827866 is about 93.8973528673.

The spelling of 827866 in words is "eight hundred twenty-seven thousand, eight hundred sixty-six".