1668065 has 8 divisors (see below), whose sum is σ = 2287680. Its totient is φ = 1143792.

The previous prime is 1668061. The next prime is 1668083. The reversal of 1668065 is 5608661.

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

It is a cyclic number.

It is not a de Polignac number, because 1668065 - 2² = 1668061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1668061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23795 + ... + 23864.

It is an arithmetic number, because the mean of its divisors is an integer number (285960).

2^1668065 is an apocalyptic number.

It is an amenable number.

1668065 is a deficient number, since it is larger than the sum of its proper divisors (619615).

1668065 is an equidigital number, since it uses as much as digits as its factorization.

1668065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47671.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1668065 is about 1291.5359073599. The cubic root of 1668065 is about 118.5962590306.

The spelling of 1668065 in words is "one million, six hundred sixty-eight thousand, sixty-five".