166457003 has 8 divisors (see below), whose sum is σ = 173995008. Its totient is φ = 158944104.

The previous prime is 166456993. The next prime is 166457041. The reversal of 166457003 is 300754661.

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 166457003 - 2⁴ = 166456987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166457903) 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, 8000 + ... + 19922.

It is an arithmetic number, because the mean of its divisors is an integer number (21749376).

Almost surely, 2^166457003 is an apocalyptic number.

166457003 is a deficient number, since it is larger than the sum of its proper divisors (7538005).

166457003 is a wasteful number, since it uses less digits than its factorization.

166457003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12553.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 166457003 is about 12901.8216930788. The cubic root of 166457003 is about 550.0903465908.

The spelling of 166457003 in words is "one hundred sixty-six million, four hundred fifty-seven thousand, three".