2067641 has 4 divisors (see below), whose sum is σ = 2076900. Its totient is φ = 2058384.

The previous prime is 2067623. The next prime is 2067647. The reversal of 2067641 is 1467602.

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 2019241 + 48400 = 1421^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2067641 - 2¹⁸ = 1805497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2067641.

It is not an unprimeable number, because it can be changed into a prime (2067647) 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, 4286 + ... + 4743.

It is an arithmetic number, because the mean of its divisors is an integer number (519225).

2^2067641 is an apocalyptic number.

It is an amenable number.

2067641 is a deficient number, since it is larger than the sum of its proper divisors (9259).

2067641 is an equidigital number, since it uses as much as digits as its factorization.

2067641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9258.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2067641 is about 1437.9294141230. The cubic root of 2067641 is about 127.3967586645.

The spelling of 2067641 in words is "two million, sixty-seven thousand, six hundred forty-one".