206304403 has 8 divisors (see below), whose sum is σ = 209844000. Its totient is φ = 202792128.

The previous prime is 206304391. The next prime is 206304419. The reversal of 206304403 is 304403602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206304403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206304443) 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, 8698 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (26230500).

Almost surely, 2^206304403 is an apocalyptic number.

206304403 is a deficient number, since it is larger than the sum of its proper divisors (3539597).

206304403 is a wasteful number, since it uses less digits than its factorization.

206304403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13661.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 206304403 is about 14363.3005608043. The cubic root of 206304403 is about 590.8848190805.

The spelling of 206304403 in words is "two hundred six million, three hundred four thousand, four hundred three".