212685 has 16 divisors (see below), whose sum is σ = 371520. Its totient is φ = 103040.

The previous prime is 212683. The next prime is 212701. The reversal of 212685 is 586212.

212685 = T₅₉ + T₆₀ + ... + T₁₁₃.

It is not a de Polignac number, because 212685 - 2¹ = 212683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212683) 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, 480 + ... + 809.

It is an arithmetic number, because the mean of its divisors is an integer number (23220).

2²¹²⁶⁸⁵ is an apocalyptic number.

It is an amenable number.

212685 is a deficient number, since it is larger than the sum of its proper divisors (158835).

212685 is a wasteful number, since it uses less digits than its factorization.

212685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308.

The product of its digits is 960, while the sum is 24.

The square root of 212685 is about 461.1778398839. The cubic root of 212685 is about 59.6914717805.

Adding to 212685 its reverse (586212), we get a palindrome (798897).

It can be divided in two parts, 2126 and 85, that added together give a triangular number (2211 = T₆₆).

The spelling of 212685 in words is "two hundred twelve thousand, six hundred eighty-five".