2830681 has 12 divisors (see below), whose sum is σ = 3375540. Its totient is φ = 2365440.

The previous prime is 2830657. The next prime is 2830741. The reversal of 2830681 is 1860382.

2830681 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 2 ways, for example, as 78400 + 2752281 = 280^2 + 1659^2 .

It is not a de Polignac number, because 2830681 - 2¹¹ = 2828633 is a prime.

It is a super-2 number, since 2×2830681² = 16025509847522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2830631) 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 11 ways as a sum of consecutive naturals, for example, 1305 + ... + 2713.

It is an arithmetic number, because the mean of its divisors is an integer number (281295).

2^2830681 is an apocalyptic number.

It is an amenable number.

2830681 is a deficient number, since it is larger than the sum of its proper divisors (544859).

2830681 is a wasteful number, since it uses less digits than its factorization.

2830681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464 (or 1457 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2830681 is about 1682.4627781915. The cubic root of 2830681 is about 141.4589108513.

Subtracting from 2830681 its reverse (1860382), we obtain a cube (970299 = 99³).

The spelling of 2830681 in words is "two million, eight hundred thirty thousand, six hundred eighty-one".