206612 has 24 divisors (see below), whose sum is σ = 424704. Its totient is φ = 86112.

The previous prime is 206603. The next prime is 206623. The reversal of 206612 is 216602.

It is a nialpdrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 206612.

It is an unprimeable number.

206612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238 + ... + 1394.

It is an arithmetic number, because the mean of its divisors is an integer number (17696).

2²⁰⁶⁶¹² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212352).

206612 is an abundant number, since it is smaller than the sum of its proper divisors (218092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206612 is a wasteful number, since it uses less digits than its factorization.

206612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 206612 is about 454.5459272725. The cubic root of 206612 is about 59.1178340270.

It can be divided in two parts, 206 and 612, that added together give a palindrome (818).

The spelling of 206612 in words is "two hundred six thousand, six hundred twelve".