1668875 has 24 divisors (see below), whose sum is σ = 2283840. Its totient is φ = 1216800.

The previous prime is 1668869. The next prime is 1668883. The reversal of 1668875 is 5788661.

It is not a de Polignac number, because 1668875 - 2⁸ = 1668619 is a prime.

It is an Ulam number.

Its product of digits (80640) is a multiple of the sum of its prime factors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21086 + ... + 21164.

It is an arithmetic number, because the mean of its divisors is an integer number (95160).

2^1668875 is an apocalyptic number.

1668875 is a deficient number, since it is larger than the sum of its proper divisors (614965).

1668875 is an equidigital number, since it uses as much as digits as its factorization.

1668875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 97 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 1668875 is about 1291.8494494329. The cubic root of 1668875 is about 118.6154524123.

The spelling of 1668875 in words is "one million, six hundred sixty-eight thousand, eight hundred seventy-five".