1668608 has 20 divisors (see below), whose sum is σ = 3334980. Its totient is φ = 834048.

The previous prime is 1668593. The next prime is 1668617. The reversal of 1668608 is 8068661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118 + ... + 2141.

It is an arithmetic number, because the mean of its divisors is an integer number (166749).

2^1668608 is an apocalyptic number.

It is an amenable number.

1668608 is a deficient number, since it is larger than the sum of its proper divisors (1666372).

1668608 is an frugal number, since it uses more digits than its factorization.

1668608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277 (or 3261 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1668608 is about 1291.7461050841. The cubic root of 1668608 is about 118.6091263913.

The spelling of 1668608 in words is "one million, six hundred sixty-eight thousand, six hundred eight".