2068021 has 4 divisors (see below), whose sum is σ = 2076844. Its totient is φ = 2059200.

The previous prime is 2067997. The next prime is 2068037. The reversal of 2068021 is 1208602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 532900 + 1535121 = 730^2 + 1239^2 .

It is a cyclic number.

It is not a de Polignac number, because 2068021 - 2¹⁹ = 1543733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2068021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4050 + ... + 4531.

It is an arithmetic number, because the mean of its divisors is an integer number (519211).

2^2068021 is an apocalyptic number.

It is an amenable number.

2068021 is a deficient number, since it is larger than the sum of its proper divisors (8823).

2068021 is an equidigital number, since it uses as much as digits as its factorization.

2068021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2068021 is about 1438.0615424939. The cubic root of 2068021 is about 127.4045626954.

The spelling of 2068021 in words is "two million, sixty-eight thousand, twenty-one".