85666323 has 8 divisors (see below), whose sum is σ = 114300928. Its totient is φ = 57071304.

The previous prime is 85666309. The next prime is 85666333. The reversal of 85666323 is 32366658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85666323 - 2¹⁰ = 85665299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85666333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4411 + ... + 13812.

It is an arithmetic number, because the mean of its divisors is an integer number (14287616).

Almost surely, 2^85666323 is an apocalyptic number.

85666323 is a deficient number, since it is larger than the sum of its proper divisors (28634605).

85666323 is a wasteful number, since it uses less digits than its factorization.

85666323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19793.

The product of its digits is 155520, while the sum is 39.

The square root of 85666323 is about 9255.6103526456. The cubic root of 85666323 is about 440.8288834838.

The spelling of 85666323 in words is "eighty-five million, six hundred sixty-six thousand, three hundred twenty-three".