85621166 has 8 divisors (see below), whose sum is σ = 132860520. Its totient is φ = 41334328.

The previous prime is 85621153. The next prime is 85621171. The reversal of 85621166 is 66112658.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738056 + ... + 738171.

It is an arithmetic number, because the mean of its divisors is an integer number (16607565).

Almost surely, 2^85621166 is an apocalyptic number.

85621166 is a deficient number, since it is larger than the sum of its proper divisors (47239354).

85621166 is a wasteful number, since it uses less digits than its factorization.

85621166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1476258.

The product of its digits is 17280, while the sum is 35.

The square root of 85621166 is about 9253.1705917485. The cubic root of 85621166 is about 440.7514123222.

It can be divided in two parts, 856 and 21166, that added together give a palindrome (22022).

The spelling of 85621166 in words is "eighty-five million, six hundred twenty-one thousand, one hundred sixty-six".