1662804 has 144 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 414720.

The previous prime is 1662803. The next prime is 1662833. The reversal of 1662804 is 4082661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87507 + ... + 87525.

It is an arithmetic number, because the mean of its divisors is an integer number (38220).

2^1662804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1662804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751840).

1662804 is an abundant number, since it is smaller than the sum of its proper divisors (3840876).

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

1662804 is a wasteful number, since it uses less digits than its factorization.

1662804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1662804 is about 1289.4975765778. The cubic root of 1662804 is about 118.4714453443.

The spelling of 1662804 in words is "one million, six hundred sixty-two thousand, eight hundred four".