166002671 has 4 divisors (see below), whose sum is σ = 175767552. Its totient is φ = 156237792.

The previous prime is 166002647. The next prime is 166002673. The reversal of 166002671 is 176200661.

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 166002671 - 2⁶ = 166002607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166002673) 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, 4882415 + ... + 4882448.

It is an arithmetic number, because the mean of its divisors is an integer number (43941888).

Almost surely, 2^166002671 is an apocalyptic number.

166002671 is a deficient number, since it is larger than the sum of its proper divisors (9764881).

166002671 is an equidigital number, since it uses as much as digits as its factorization.

166002671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764880.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 166002671 is about 12884.2023812109. The cubic root of 166002671 is about 549.5894136753.

The spelling of 166002671 in words is "one hundred sixty-six million, two thousand, six hundred seventy-one".