1668662 has 8 divisors (see below), whose sum is σ = 2508600. Its totient is φ = 832464.

The previous prime is 1668649. The next prime is 1668679. The reversal of 1668662 is 2668661.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 914 + ... + 2042.

It is an arithmetic number, because the mean of its divisors is an integer number (313575).

2^1668662 is an apocalyptic number.

1668662 is a deficient number, since it is larger than the sum of its proper divisors (839938).

1668662 is a wasteful number, since it uses less digits than its factorization.

1668662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870.

The product of its digits is 20736, while the sum is 35.

The square root of 1668662 is about 1291.7670068553. The cubic root of 1668662 is about 118.6104058657.

Subtracting 1668662 from its reverse (2668661), we obtain a palindrome (999999).

The spelling of 1668662 in words is "one million, six hundred sixty-eight thousand, six hundred sixty-two".