406803 has 4 divisors (see below), whose sum is σ = 542408. Its totient is φ = 271200.

The previous prime is 406789. The next prime is 406807. The reversal of 406803 is 308604.

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

It is not a de Polignac number, because 406803 - 2⁶ = 406739 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406803.

It is not an unprimeable number, because it can be changed into a prime (406807) 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, 67798 + ... + 67803.

It is an arithmetic number, because the mean of its divisors is an integer number (135602).

2⁴⁰⁶⁸⁰³ is an apocalyptic number.

406803 is a deficient number, since it is larger than the sum of its proper divisors (135605).

406803 is a wasteful number, since it uses less digits than its factorization.

406803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135604.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 406803 is about 637.8111005619. The cubic root of 406803 is about 74.0959918135.

The spelling of 406803 in words is "four hundred six thousand, eight hundred three".