85945823 has 4 divisors (see below), whose sum is σ = 85965600. Its totient is φ = 85926048.

The previous prime is 85945813. The next prime is 85945837. The reversal of 85945823 is 32854958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85945823 - 2⁸ = 85945567 is a prime.

It is a super-2 number, since 2×85945823² = 14773368982294658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85945813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215 + ... + 13112.

It is an arithmetic number, because the mean of its divisors is an integer number (21491400).

Almost surely, 2^85945823 is an apocalyptic number.

85945823 is a deficient number, since it is larger than the sum of its proper divisors (19777).

85945823 is a wasteful number, since it uses less digits than its factorization.

85945823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19776.

The product of its digits is 345600, while the sum is 44.

The square root of 85945823 is about 9270.6970072374. The cubic root of 85945823 is about 441.3077878021.

It can be divided in two parts, 85945 and 823, that added together give a palindrome (86768).

The spelling of 85945823 in words is "eighty-five million, nine hundred forty-five thousand, eight hundred twenty-three".