1808668 has 12 divisors (see below), whose sum is σ = 3188920. Its totient is φ = 897552.

The previous prime is 1808627. The next prime is 1808669. The reversal of 1808668 is 8668081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808669) 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 3 ways as a sum of consecutive naturals, for example, 1071 + ... + 2182.

2^1808668 is an apocalyptic number.

It is an amenable number.

1808668 is a deficient number, since it is larger than the sum of its proper divisors (1380252).

1808668 is a wasteful number, since it uses less digits than its factorization.

1808668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 1808668 is about 1344.8672796971. The cubic root of 1808668 is about 121.8389885276.

The spelling of 1808668 in words is "one million, eight hundred eight thousand, six hundred sixty-eight".