206961 has 8 divisors (see below), whose sum is σ = 278400. Its totient is φ = 136752.

The previous prime is 206953. The next prime is 206993. The reversal of 206961 is 169602.

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

It is not a de Polignac number, because 206961 - 2³ = 206953 is a prime.

It is a Curzon number.

206961 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206911) 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, 216 + ... + 678.

It is an arithmetic number, because the mean of its divisors is an integer number (34800).

2²⁰⁶⁹⁶¹ is an apocalyptic number.

It is an amenable number.

206961 is a deficient number, since it is larger than the sum of its proper divisors (71439).

206961 is a wasteful number, since it uses less digits than its factorization.

206961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 206961 is about 454.9296648934. The cubic root of 206961 is about 59.1511017269.

The spelling of 206961 in words is "two hundred six thousand, nine hundred sixty-one".