85666853 has 8 divisors (see below), whose sum is σ = 87713280. Its totient is φ = 83629840.

The previous prime is 85666837. The next prime is 85666871. The reversal of 85666853 is 35866658.

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

It is a cyclic number.

It is not a de Polignac number, because 85666853 - 2⁴ = 85666837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a junction number, because it is equal to n+sod(n) for n = 85666798 and 85666807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85666813) 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, 18143 + ... + 22371.

It is an arithmetic number, because the mean of its divisors is an integer number (10964160).

Almost surely, 2^85666853 is an apocalyptic number.

It is an amenable number.

85666853 is a deficient number, since it is larger than the sum of its proper divisors (2046427).

85666853 is a wasteful number, since it uses less digits than its factorization.

85666853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4707.

The product of its digits is 1036800, while the sum is 47.

The square root of 85666853 is about 9255.6389838844. The cubic root of 85666853 is about 440.8297925879.

The spelling of 85666853 in words is "eighty-five million, six hundred sixty-six thousand, eight hundred fifty-three".