85906823 has 2 divisors, whose sum is σ = 85906824. Its totient is φ = 85906822.

The previous prime is 85906811. The next prime is 85906871. The reversal of 85906823 is 32860958.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85906823 - 2⁶ = 85906759 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85906883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42953411 + 42953412.

It is an arithmetic number, because the mean of its divisors is an integer number (42953412).

Almost surely, 2^85906823 is an apocalyptic number.

85906823 is a deficient number, since it is larger than the sum of its proper divisors (1).

85906823 is an equidigital number, since it uses as much as digits as its factorization.

85906823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 85906823 is about 9268.5933668491. The cubic root of 85906823 is about 441.2410263351.

The spelling of 85906823 in words is "eighty-five million, nine hundred six thousand, eight hundred twenty-three".