166427603 has 8 divisors (see below), whose sum is σ = 176334480. Its totient is φ = 156533760.

The previous prime is 166427543. The next prime is 166427627. The reversal of 166427603 is 306724661.

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 166427603 - 2⁶ = 166427539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166427203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38243 + ... + 42371.

It is an arithmetic number, because the mean of its divisors is an integer number (22041810).

Almost surely, 2^166427603 is an apocalyptic number.

166427603 is a deficient number, since it is larger than the sum of its proper divisors (9906877).

166427603 is a wasteful number, since it uses less digits than its factorization.

166427603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517.

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

The square root of 166427603 is about 12900.6822687794. The cubic root of 166427603 is about 550.0579586304.

The spelling of 166427603 in words is "one hundred sixty-six million, four hundred twenty-seven thousand, six hundred three".