2786261 has 4 divisors (see below), whose sum is σ = 2789772. Its totient is φ = 2782752.

The previous prime is 2786257. The next prime is 2786281. The reversal of 2786261 is 1626872.

2786261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 592900 + 2193361 = 770^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 2786261 - 2² = 2786257 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2786221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65 + ... + 2361.

It is an arithmetic number, because the mean of its divisors is an integer number (697443).

2^2786261 is an apocalyptic number.

It is an amenable number.

2786261 is a deficient number, since it is larger than the sum of its proper divisors (3511).

2786261 is a wasteful number, since it uses less digits than its factorization.

2786261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510.

The product of its digits is 8064, while the sum is 32.

The square root of 2786261 is about 1669.2096932381. The cubic root of 2786261 is about 140.7150659904.

The spelling of 2786261 in words is "two million, seven hundred eighty-six thousand, two hundred sixty-one".