2172966 has 8 divisors (see below), whose sum is σ = 4345944. Its totient is φ = 724320.

The previous prime is 2172949. The next prime is 2172967. The reversal of 2172966 is 6692712.

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

2172966 is an admirable number.

It is a super-3 number, since 3×2172966³ = 30780810263333774088, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181075 + ... + 181086.

It is an arithmetic number, because the mean of its divisors is an integer number (543243).

2^2172966 is an apocalyptic number.

2172966 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2172966 is a wasteful number, since it uses less digits than its factorization.

2172966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362166.

The product of its digits is 9072, while the sum is 33.

The square root of 2172966 is about 1474.0983684951. The cubic root of 2172966 is about 129.5242174314.

The spelling of 2172966 in words is "two million, one hundred seventy-two thousand, nine hundred sixty-six".