85107823 has 2 divisors, whose sum is σ = 85107824. Its totient is φ = 85107822.

The previous prime is 85107817. The next prime is 85107833. The reversal of 85107823 is 32870158.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85107823 - 2⁵ = 85107791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85107833) 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, 42553911 + 42553912.

It is an arithmetic number, because the mean of its divisors is an integer number (42553912).

Almost surely, 2^85107823 is an apocalyptic number.

85107823 is a deficient number, since it is larger than the sum of its proper divisors (1).

85107823 is an equidigital number, since it uses as much as digits as its factorization.

85107823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 85107823 is about 9225.3901272521. The cubic root of 85107823 is about 439.8688021372.

The spelling of 85107823 in words is "eighty-five million, one hundred seven thousand, eight hundred twenty-three".