2800681 has 8 divisors (see below), whose sum is σ = 3048584. Its totient is φ = 2557440.

The previous prime is 2800663. The next prime is 2800703. The reversal of 2800681 is 1860082.

2800681 is nontrivially palindromic in base 6.

2800681 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 4 ways, for example, as 189225 + 2611456 = 435^2 + 1616^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2800681 - 2¹⁵ = 2767913 is a prime.

It is a super-2 number, since 2×2800681² = 15687628127522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2800601) 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 7 ways as a sum of consecutive naturals, for example, 151 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (381073).

2^2800681 is an apocalyptic number.

It is an amenable number.

2800681 is a deficient number, since it is larger than the sum of its proper divisors (247903).

2800681 is a wasteful number, since it uses less digits than its factorization.

2800681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 2800681 is about 1673.5235283676. The cubic root of 2800681 is about 140.9574004066.

It can be divided in two parts, 2800 and 681, that added together give a square (3481 = 59²).

The spelling of 2800681 in words is "two million, eight hundred thousand, six hundred eighty-one".