268423 has 4 divisors (see below), whose sum is σ = 270088. Its totient is φ = 266760.

The previous prime is 268403. The next prime is 268439. The reversal of 268423 is 324862.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268423 - 2¹³ = 260231 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561 + ... + 922.

It is an arithmetic number, because the mean of its divisors is an integer number (67522).

2²⁶⁸⁴²³ is an apocalyptic number.

268423 is a deficient number, since it is larger than the sum of its proper divisors (1665).

268423 is a wasteful number, since it uses less digits than its factorization.

268423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664.

The product of its digits is 2304, while the sum is 25.

The square root of 268423 is about 518.0955510328. The cubic root of 268423 is about 64.5069599685.

The spelling of 268423 in words is "two hundred sixty-eight thousand, four hundred twenty-three".