85310665 has 16 divisors (see below), whose sum is σ = 117558720. Its totient is φ = 58777920.

The previous prime is 85310651. The next prime is 85310669. The reversal of 85310665 is 56601358.

It is not a de Polignac number, because 85310665 - 2¹⁵ = 85277897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85310665.

It is not an unprimeable number, because it can be changed into a prime (85310669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39774 + ... + 41863.

It is an arithmetic number, because the mean of its divisors is an integer number (7347420).

Almost surely, 2^85310665 is an apocalyptic number.

It is an amenable number.

85310665 is a deficient number, since it is larger than the sum of its proper divisors (32248055).

85310665 is a wasteful number, since it uses less digits than its factorization.

85310665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81672.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 85310665 is about 9236.3772660064. The cubic root of 85310665 is about 440.2179791150.

It can be divided in two parts, 853 and 10665, that multiplied together give a triangular number (9097245 = T₄₂₆₅).

The spelling of 85310665 in words is "eighty-five million, three hundred ten thousand, six hundred sixty-five".