85065172 has 6 divisors (see below), whose sum is σ = 148864058. Its totient is φ = 42532584.

The previous prime is 85065151. The next prime is 85065179. The reversal of 85065172 is 27156058.

It can be written as a sum of positive squares in only one way, i.e., 80928016 + 4137156 = 8996^2 + 2034^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85065179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10633143 + ... + 10633150.

Almost surely, 2^85065172 is an apocalyptic number.

It is an amenable number.

85065172 is a deficient number, since it is larger than the sum of its proper divisors (63798886).

85065172 is a wasteful number, since it uses less digits than its factorization.

85065172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21266297 (or 21266295 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 85065172 is about 9223.0782280104. The cubic root of 85065172 is about 439.7953111292.

The spelling of 85065172 in words is "eighty-five million, sixty-five thousand, one hundred seventy-two".