885811 has 2 divisors, whose sum is σ = 885812. Its totient is φ = 885810.

The previous prime is 885803. The next prime is 885821. The reversal of 885811 is 118588.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 885811 - 2³ = 885803 is a prime.

It is a super-2 number, since 2×885811² = 1569322255442, which contains 22 as substring.

It is a Chen prime.

885811 is a lucky number.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (885821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442905 + 442906.

It is an arithmetic number, because the mean of its divisors is an integer number (442906).

2⁸⁸⁵⁸¹¹ is an apocalyptic number.

885811 is a deficient number, since it is larger than the sum of its proper divisors (1).

885811 is an equidigital number, since it uses as much as digits as its factorization.

885811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 31.

The square root of 885811 is about 941.1753290434. The cubic root of 885811 is about 96.0388659180.

The spelling of 885811 in words is "eight hundred eighty-five thousand, eight hundred eleven".