206923 has 2 divisors, whose sum is σ = 206924. Its totient is φ = 206922.

The previous prime is 206917. The next prime is 206933. The reversal of 206923 is 329602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206923 - 2⁹ = 206411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206894 and 206903.

It is not a weakly prime, because it can be changed into another prime (206933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103461 + 103462.

It is an arithmetic number, because the mean of its divisors is an integer number (103462).

2²⁰⁶⁹²³ is an apocalyptic number.

206923 is a deficient number, since it is larger than the sum of its proper divisors (1).

206923 is an equidigital number, since it uses as much as digits as its factorization.

206923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 206923 is about 454.8878982782. The cubic root of 206923 is about 59.1474812711.

The spelling of 206923 in words is "two hundred six thousand, nine hundred twenty-three".