215086 has 16 divisors (see below), whose sum is σ = 343728. Its totient is φ = 100800.

The previous prime is 215077. The next prime is 215087. The reversal of 215086 is 680512.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215087) 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, 3496 + ... + 3556.

It is an arithmetic number, because the mean of its divisors is an integer number (21483).

215086 is a Friedman number, since it can be written as 2501*86, using all its digits and the basic arithmetic operations.

2²¹⁵⁰⁸⁶ is an apocalyptic number.

215086 is a deficient number, since it is larger than the sum of its proper divisors (128642).

215086 is a wasteful number, since it uses less digits than its factorization.

215086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 215086 is about 463.7736516880. The cubic root of 215086 is about 59.9152507194.

Adding to 215086 its reverse (680512), we get a palindrome (895598).

It can be divided in two parts, 2150 and 86, that multiplied together give a square (184900 = 430²).

The spelling of 215086 in words is "two hundred fifteen thousand, eighty-six".