2779265 has 4 divisors (see below), whose sum is σ = 3335124. Its totient is φ = 2223408.

The previous prime is 2779261. The next prime is 2779277. The reversal of 2779265 is 5629772.

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 1597696 + 1181569 = 1264^2 + 1087^2 .

It is a cyclic number.

It is not a de Polignac number, because 2779265 - 2² = 2779261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2779261) 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, 277922 + ... + 277931.

It is an arithmetic number, because the mean of its divisors is an integer number (833781).

2^2779265 is an apocalyptic number.

It is an amenable number.

2779265 is a deficient number, since it is larger than the sum of its proper divisors (555859).

2779265 is an equidigital number, since it uses as much as digits as its factorization.

2779265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555858.

The product of its digits is 52920, while the sum is 38.

The square root of 2779265 is about 1667.1127736299. The cubic root of 2779265 is about 140.5971938437.

The spelling of 2779265 in words is "two million, seven hundred seventy-nine thousand, two hundred sixty-five".