206693 has 4 divisors (see below), whose sum is σ = 208320. Its totient is φ = 205068.

The previous prime is 206651. The next prime is 206699. The reversal of 206693 is 396602.

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, and also an emirpimes, since its reverse is a distinct semiprime: 396602 = 2 ⋅198301.

It is a cyclic number.

It is not a de Polignac number, because 206693 - 2¹⁶ = 141157 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206699) 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, 605 + ... + 882.

It is an arithmetic number, because the mean of its divisors is an integer number (52080).

2²⁰⁶⁶⁹³ is an apocalyptic number.

It is an amenable number.

206693 is a deficient number, since it is larger than the sum of its proper divisors (1627).

206693 is a wasteful number, since it uses less digits than its factorization.

206693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 206693 is about 454.6350184489. The cubic root of 206693 is about 59.1255585201.

The spelling of 206693 in words is "two hundred six thousand, six hundred ninety-three".