206423 has 8 divisors (see below), whose sum is σ = 242592. Its totient is φ = 171936.

The previous prime is 206419. The next prime is 206447. The reversal of 206423 is 324602.

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 206423 - 2² = 206419 is a prime.

It is a super-3 number, since 3×206423³ = 26387333813426901, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206413) 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, 140 + ... + 657.

It is an arithmetic number, because the mean of its divisors is an integer number (30324).

2²⁰⁶⁴²³ is an apocalyptic number.

206423 is a deficient number, since it is larger than the sum of its proper divisors (36169).

206423 is an equidigital number, since it uses as much as digits as its factorization.

206423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 206423 is about 454.3379799224. The cubic root of 206423 is about 59.0998023552.

The spelling of 206423 in words is "two hundred six thousand, four hundred twenty-three".