2861361 has 18 divisors (see below), whose sum is σ = 4327778. Its totient is φ = 1821600.

The previous prime is 2861347. The next prime is 2861363. The reversal of 2861361 is 1631682.

2861361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2742336 + 119025 = 1656^2 + 345^2 .

It is not a de Polignac number, because 2861361 - 2⁶ = 2861297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2861363) 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 17 ways as a sum of consecutive naturals, for example, 4461 + ... + 5061.

2^2861361 is an apocalyptic number.

It is an amenable number.

2861361 is a deficient number, since it is larger than the sum of its proper divisors (1466417).

2861361 is a wasteful number, since it uses less digits than its factorization.

2861361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 627 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2861361 is about 1691.5557927541. Note that the first 3 decimals coincide. The cubic root of 2861361 is about 141.9681373991.

The spelling of 2861361 in words is "two million, eight hundred sixty-one thousand, three hundred sixty-one".