1668101 has 4 divisors (see below), whose sum is σ = 1677600. Its totient is φ = 1658604.

The previous prime is 1668089. The next prime is 1668113. The reversal of 1668101 is 1018661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1668089) and next prime (1668113).

It is a cyclic number.

It is not a de Polignac number, because 1668101 - 2¹⁰ = 1667077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4481 + ... + 4838.

It is an arithmetic number, because the mean of its divisors is an integer number (419400).

2^1668101 is an apocalyptic number.

It is an amenable number.

1668101 is a deficient number, since it is larger than the sum of its proper divisors (9499).

1668101 is an equidigital number, since it uses as much as digits as its factorization.

1668101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9498.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1668101 is about 1291.5498441795. The cubic root of 1668101 is about 118.5971122017.

The spelling of 1668101 in words is "one million, six hundred sixty-eight thousand, one hundred one".