662172 has 24 divisors (see below), whose sum is σ = 1766016. Its totient is φ = 189168.

The previous prime is 662149. The next prime is 662177. The reversal of 662172 is 271266.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662177) by changing a digit.

662172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3858 + ... + 4025.

It is an arithmetic number, because the mean of its divisors is an integer number (73584).

2⁶⁶²¹⁷² is an apocalyptic number.

It is an amenable number.

662172 is an abundant number, since it is smaller than the sum of its proper divisors (1103844).

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

662172 is a wasteful number, since it uses less digits than its factorization.

662172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7897 (or 7895 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 662172 is about 813.7395160615. The cubic root of 662172 is about 87.1612809614.

The spelling of 662172 in words is "six hundred sixty-two thousand, one hundred seventy-two".