163606403 has 8 divisors (see below), whose sum is σ = 165422208. Its totient is φ = 161800704.

The previous prime is 163606381. The next prime is 163606411. The reversal of 163606403 is 304606361.

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 163606403 - 2²⁶ = 96497539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163606433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32675 + ... + 37347.

It is an arithmetic number, because the mean of its divisors is an integer number (20677776).

Almost surely, 2^163606403 is an apocalyptic number.

163606403 is a deficient number, since it is larger than the sum of its proper divisors (1815805).

163606403 is a wasteful number, since it uses less digits than its factorization.

163606403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 163606403 is about 12790.8718623869. The cubic root of 163606403 is about 546.9321237440.

The spelling of 163606403 in words is "one hundred sixty-three million, six hundred six thousand, four hundred three".