85786823 has 2 divisors, whose sum is σ = 85786824. Its totient is φ = 85786822.

The previous prime is 85786819. The next prime is 85786837. The reversal of 85786823 is 32868758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85786823 - 2² = 85786819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85786853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42893411 + 42893412.

It is an arithmetic number, because the mean of its divisors is an integer number (42893412).

Almost surely, 2^85786823 is an apocalyptic number.

85786823 is a deficient number, since it is larger than the sum of its proper divisors (1).

85786823 is an equidigital number, since it uses as much as digits as its factorization.

85786823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 47.

The square root of 85786823 is about 9262.1176304342. The cubic root of 85786823 is about 441.0354796176.

The spelling of 85786823 in words is "eighty-five million, seven hundred eighty-six thousand, eight hundred twenty-three".