206149 has 4 divisors (see below), whose sum is σ = 215136. Its totient is φ = 197164.

The previous prime is 206123. The next prime is 206153. The reversal of 206149 is 941602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 206149 - 2⁷ = 206021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4459 + ... + 4504.

It is an arithmetic number, because the mean of its divisors is an integer number (53784).

2²⁰⁶¹⁴⁹ is an apocalyptic number.

It is an amenable number.

206149 is a deficient number, since it is larger than the sum of its proper divisors (8987).

206149 is an equidigital number, since it uses as much as digits as its factorization.

206149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8986.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 206149 is about 454.0363421578. The cubic root of 206149 is about 59.0736416464.

The spelling of 206149 in words is "two hundred six thousand, one hundred forty-nine".