2708861 has 6 divisors (see below), whose sum is σ = 2806362. Its totient is φ = 2614640.

The previous prime is 2708851. The next prime is 2708869. The reversal of 2708861 is 1688072.

It can be written as a sum of positive squares in 3 ways, for example, as 765625 + 1943236 = 875^2 + 1394^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2708861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2708869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 770 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (467727).

2^2708861 is an apocalyptic number.

It is an amenable number.

2708861 is a deficient number, since it is larger than the sum of its proper divisors (97501).

2708861 is an equidigital number, since it uses as much as digits as its factorization.

2708861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279 (or 3250 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 2708861 is about 1645.8617803449. The cubic root of 2708861 is about 139.3998287391.

The spelling of 2708861 in words is "two million, seven hundred eight thousand, eight hundred sixty-one".