1668264 has 32 divisors (see below), whose sum is σ = 4492320. Its totient is φ = 513216.

The previous prime is 1668253. The next prime is 1668299. The reversal of 1668264 is 4628661.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2362 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (140385).

2^1668264 is an apocalyptic number.

It is an amenable number.

1668264 is an abundant number, since it is smaller than the sum of its proper divisors (2824056).

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

1668264 is a wasteful number, since it uses less digits than its factorization.

1668264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369 (or 5365 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 1668264 is about 1291.6129451194. The cubic root of 1668264 is about 118.6009750173.

The spelling of 1668264 in words is "one million, six hundred sixty-eight thousand, two hundred sixty-four".