1662208 has 36 divisors (see below), whose sum is σ = 3417568. Its totient is φ = 806400.

The previous prime is 1662191. The next prime is 1662211. The reversal of 1662208 is 8022661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10933 + ... + 11083.

2^1662208 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 1662208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1708784).

1662208 is an abundant number, since it is smaller than the sum of its proper divisors (1755360).

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

1662208 is an equidigital number, since it uses as much as digits as its factorization.

1662208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1662208 is about 1289.2664581071. The cubic root of 1662208 is about 118.4572890519.

Adding to 1662208 its reverse (8022661), we get a palindrome (9684869).

It can be divided in two parts, 1662 and 208, that multiplied together give a triangular number (345696 = T₈₃₁).

The spelling of 1662208 in words is "one million, six hundred sixty-two thousand, two hundred eight".