671422 has 8 divisors (see below), whose sum is σ = 1060200. Its totient is φ = 318024.

The previous prime is 671417. The next prime is 671431. The reversal of 671422 is 224176.

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

It is a junction number, because it is equal to n+sod(n) for n = 671393 and 671402.

It is a congruent number.

It is an unprimeable number.

671422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8797 + ... + 8872.

It is an arithmetic number, because the mean of its divisors is an integer number (132525).

2⁶⁷¹⁴²² is an apocalyptic number.

671422 is a deficient number, since it is larger than the sum of its proper divisors (388778).

671422 is a wasteful number, since it uses less digits than its factorization.

671422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17690.

The product of its digits is 672, while the sum is 22.

The square root of 671422 is about 819.4034415354. The cubic root of 671422 is about 87.5652628755.

Adding to 671422 its reverse (224176), we get a palindrome (895598).

The spelling of 671422 in words is "six hundred seventy-one thousand, four hundred twenty-two".