1662204 has 12 divisors (see below), whose sum is σ = 3878504. Its totient is φ = 554064.

The previous prime is 1662191. The next prime is 1662211. The reversal of 1662204 is 4022661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable 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, 69247 + ... + 69270.

2^1662204 is an apocalyptic number.

It is an amenable number.

1662204 is an abundant number, since it is smaller than the sum of its proper divisors (2216300).

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

1662204 is a wasteful number, since it uses less digits than its factorization.

1662204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138524 (or 138522 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1662204 is about 1289.2649068364. The cubic root of 1662204 is about 118.4571940318.

Adding to 1662204 its reverse (4022661), we get a palindrome (5684865).

The spelling of 1662204 in words is "one million, six hundred sixty-two thousand, two hundred four".