171666672 has 80 divisors (see below), whose sum is σ = 478302720. Its totient is φ = 52876800.

The previous prime is 171666667. The next prime is 171666709. The reversal of 171666672 is 276666171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35097 + ... + 39687.

It is an arithmetic number, because the mean of its divisors is an integer number (5978784).

Almost surely, 2^171666672 is an apocalyptic number.

171666672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171666672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239151360).

171666672 is an abundant number, since it is smaller than the sum of its proper divisors (306636048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171666672 is a wasteful number, since it uses less digits than its factorization.

171666672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662 (or 4656 counting only the distinct ones).

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

The square root of 171666672 is about 13102.1628748844. The cubic root of 171666672 is about 555.7702931177.

The spelling of 171666672 in words is "one hundred seventy-one million, six hundred sixty-six thousand, six hundred seventy-two".