1671222 has 16 divisors (see below), whose sum is σ = 3820032. Its totient is φ = 477480.

The previous prime is 1671211. The next prime is 1671223. The reversal of 1671222 is 2221761.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 (1671223) 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, 19854 + ... + 19937.

It is an arithmetic number, because the mean of its divisors is an integer number (238752).

2^1671222 is an apocalyptic number.

1671222 is an abundant number, since it is smaller than the sum of its proper divisors (2148810).

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

1671222 is a wasteful number, since it uses less digits than its factorization.

1671222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39803.

The product of its digits is 336, while the sum is 21.

The square root of 1671222 is about 1292.7575178664. The cubic root of 1671222 is about 118.6710307840.

Adding to 1671222 its reverse (2221761), we get a palindrome (3892983).

The spelling of 1671222 in words is "one million, six hundred seventy-one thousand, two hundred twenty-two".