2740261 has 4 divisors (see below), whose sum is σ = 2804032. Its totient is φ = 2676492.

The previous prime is 2740249. The next prime is 2740267. The reversal of 2740261 is 1620472.

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 not a de Polignac number, because 2740261 - 2¹³ = 2732069 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 (2740267) 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, 31821 + ... + 31906.

It is an arithmetic number, because the mean of its divisors is an integer number (701008).

2^2740261 is an apocalyptic number.

It is an amenable number.

2740261 is a deficient number, since it is larger than the sum of its proper divisors (63771).

2740261 is an equidigital number, since it uses as much as digits as its factorization.

2740261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63770.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 2740261 is about 1655.3733717805. The cubic root of 2740261 is about 139.9363826607.

The spelling of 2740261 in words is "two million, seven hundred forty thousand, two hundred sixty-one".