206975 has 12 divisors (see below), whose sum is σ = 272304. Its totient is φ = 155520.

The previous prime is 206953. The next prime is 206993. The reversal of 206975 is 579602.

It is not a de Polignac number, because 206975 - 2⁶ = 206911 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a zygodrome 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 206975.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 182 + ... + 668.

It is an arithmetic number, because the mean of its divisors is an integer number (22692).

2²⁰⁶⁹⁷⁵ is an apocalyptic number.

206975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

206975 is a deficient number, since it is larger than the sum of its proper divisors (65329).

206975 is a wasteful number, since it uses less digits than its factorization.

206975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 206975 is about 454.9450516271. The cubic root of 206975 is about 59.1524354673.

It can be divided in two parts, 20697 and 5, that added together give a palindrome (20702).

The spelling of 206975 in words is "two hundred six thousand, nine hundred seventy-five".