85690215 has 48 divisors (see below), whose sum is σ = 165503520. Its totient is φ = 40723200.

The previous prime is 85690211. The next prime is 85690223. The reversal of 85690215 is 51209658.

It is a happy number.

It is not a de Polignac number, because 85690215 - 2² = 85690211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85690215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85690211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14440 + ... + 19490.

It is an arithmetic number, because the mean of its divisors is an integer number (3447990).

Almost surely, 2^85690215 is an apocalyptic number.

85690215 is a deficient number, since it is larger than the sum of its proper divisors (79813305).

85690215 is a wasteful number, since it uses less digits than its factorization.

85690215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5104 (or 5101 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 85690215 is about 9256.9009392993. The cubic root of 85690215 is about 440.8698614875.

It can be divided in two parts, 85690 and 215, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 85690215 in words is "eighty-five million, six hundred ninety thousand, two hundred fifteen".