2160641 has 4 divisors (see below), whose sum is σ = 2469312. Its totient is φ = 1851972.

The previous prime is 2160629. The next prime is 2160671. The reversal of 2160641 is 1460612.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2160641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2160671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154325 + ... + 154338.

It is an arithmetic number, because the mean of its divisors is an integer number (617328).

It is a Proth number, since it is equal to 1055 ⋅ 2¹¹ + 1 and 1055 < 2¹¹.

2^2160641 is an apocalyptic number.

It is an amenable number.

2160641 is a deficient number, since it is larger than the sum of its proper divisors (308671).

2160641 is an equidigital number, since it uses as much as digits as its factorization.

2160641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308670.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2160641 is about 1469.9119021220. The cubic root of 2160641 is about 129.2788671061.

The spelling of 2160641 in words is "two million, one hundred sixty thousand, six hundred forty-one".