885666823 has 2 divisors, whose sum is σ = 885666824. Its totient is φ = 885666822.

The previous prime is 885666811. The next prime is 885666827. The reversal of 885666823 is 328666588.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 885666823 - 2²¹ = 883569671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (885666827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 442833411 + 442833412.

It is an arithmetic number, because the mean of its divisors is an integer number (442833412).

Almost surely, 2^885666823 is an apocalyptic number.

885666823 is a deficient number, since it is larger than the sum of its proper divisors (1).

885666823 is an equidigital number, since it uses as much as digits as its factorization.

885666823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3317760, while the sum is 52.

The square root of 885666823 is about 29760.1549559138. The cubic root of 885666823 is about 960.3365511986.

The spelling of 885666823 in words is "eight hundred eighty-five million, six hundred sixty-six thousand, eight hundred twenty-three".