268403 has 2 divisors, whose sum is σ = 268404. Its totient is φ = 268402.

The previous prime is 268343. The next prime is 268439. The reversal of 268403 is 304862.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268403 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (268493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134201 + 134202.

It is an arithmetic number, because the mean of its divisors is an integer number (134202).

2²⁶⁸⁴⁰³ is an apocalyptic number.

268403 is a deficient number, since it is larger than the sum of its proper divisors (1).

268403 is an equidigital number, since it uses as much as digits as its factorization.

268403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 268403 is about 518.0762492143. The cubic root of 268403 is about 64.5053578066.

The spelling of 268403 in words is "two hundred sixty-eight thousand, four hundred three".