166672671 has 8 divisors (see below), whose sum is σ = 242433024. Its totient is φ = 101013720.

The previous prime is 166672631. The next prime is 166672711. The reversal of 166672671 is 176276661.

It is an interprime number because it is at equal distance from previous prime (166672631) and next prime (166672711).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166672671 - 2⁷ = 166672543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166672631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2525311 + ... + 2525376.

It is an arithmetic number, because the mean of its divisors is an integer number (30304128).

Almost surely, 2^166672671 is an apocalyptic number.

166672671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166672671 is a deficient number, since it is larger than the sum of its proper divisors (75760353).

166672671 is a wasteful number, since it uses less digits than its factorization.

166672671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050701.

The product of its digits is 127008, while the sum is 42.

The square root of 166672671 is about 12910.1770320937. The cubic root of 166672671 is about 550.3278166937.

The spelling of 166672671 in words is "one hundred sixty-six million, six hundred seventy-two thousand, six hundred seventy-one".