2670641 has 4 divisors (see below), whose sum is σ = 2714484. Its totient is φ = 2626800.

The previous prime is 2670637. The next prime is 2670643. The reversal of 2670641 is 1460762.

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 1449616 + 1221025 = 1204^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2670641 - 2² = 2670637 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 2670641.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2670643) 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, 21830 + ... + 21951.

It is an arithmetic number, because the mean of its divisors is an integer number (678621).

2^2670641 is an apocalyptic number.

It is an amenable number.

2670641 is a deficient number, since it is larger than the sum of its proper divisors (43843).

2670641 is an equidigital number, since it uses as much as digits as its factorization.

2670641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43842.

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

The square root of 2670641 is about 1634.2095948807. The cubic root of 2670641 is about 138.7411118945.

The spelling of 2670641 in words is "two million, six hundred seventy thousand, six hundred forty-one".