1668075 has 24 divisors (see below), whose sum is σ = 2880768. Its totient is φ = 850080.

The previous prime is 1668061. The next prime is 1668083. The reversal of 1668075 is 5708661.

It is not a de Polignac number, because 1668075 - 2⁶ = 1668011 is a prime.

1668075 is a lucky number.

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, 1242 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (120032).

2^1668075 is an apocalyptic number.

1668075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1668075 is a deficient number, since it is larger than the sum of its proper divisors (1212693).

1668075 is a wasteful number, since it uses less digits than its factorization.

1668075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1668075 is about 1291.5397787138. The cubic root of 1668075 is about 118.5964960238.

The spelling of 1668075 in words is "one million, six hundred sixty-eight thousand, seventy-five".