206261 has 8 divisors (see below), whose sum is σ = 238464. Its totient is φ = 176320.

The previous prime is 206251. The next prime is 206263. The reversal of 206261 is 162602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 206261 - 2⁶ = 206197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206263) 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, 365 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (29808).

2²⁰⁶²⁶¹ is an apocalyptic number.

It is an amenable number.

206261 is a deficient number, since it is larger than the sum of its proper divisors (32203).

206261 is a wasteful number, since it uses less digits than its factorization.

206261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131.

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

The square root of 206261 is about 454.1596635546. The cubic root of 206261 is about 59.0843378743.

Adding to 206261 its reverse (162602), we get a palindrome (368863).

The spelling of 206261 in words is "two hundred six thousand, two hundred sixty-one".