1662044 has 18 divisors (see below), whose sum is σ = 3072384. Its totient is φ = 786600.

The previous prime is 1662041. The next prime is 1662083. The reversal of 1662044 is 4402661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 869 + ... + 2019.

It is an arithmetic number, because the mean of its divisors is an integer number (170688).

2^1662044 is an apocalyptic number.

It is an amenable number.

1662044 is a deficient number, since it is larger than the sum of its proper divisors (1410340).

1662044 is a wasteful number, since it uses less digits than its factorization.

1662044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1662044 is about 1289.2028544802. The cubic root of 1662044 is about 118.4533931026.

The spelling of 1662044 in words is "one million, six hundred sixty-two thousand, forty-four".