166472603 has 4 divisors (see below), whose sum is σ = 181606488. Its totient is φ = 151338720.

The previous prime is 166472569. The next prime is 166472639. The reversal of 166472603 is 306274661.

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 166472603 - 2¹⁸ = 166210459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166472693) 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, 7566926 + ... + 7566947.

It is an arithmetic number, because the mean of its divisors is an integer number (45401622).

Almost surely, 2^166472603 is an apocalyptic number.

166472603 is a deficient number, since it is larger than the sum of its proper divisors (15133885).

166472603 is a wasteful number, since it uses less digits than its factorization.

166472603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15133884.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 166472603 is about 12902.4262447030. The cubic root of 166472603 is about 550.1075304905.

The spelling of 166472603 in words is "one hundred sixty-six million, four hundred seventy-two thousand, six hundred three".