2683681 has 24 divisors (see below), whose sum is σ = 3677184. Its totient is φ = 1925280.

The previous prime is 2683679. The next prime is 2683697. The reversal of 2683681 is 1863862.

It is not a de Polignac number, because 2683681 - 2¹ = 2683679 is a prime.

It is a super-2 number, since 2×2683681² = 14404287419522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

2683681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2683621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6816 + ... + 7198.

It is an arithmetic number, because the mean of its divisors is an integer number (153216).

2^2683681 is an apocalyptic number.

It is an amenable number.

2683681 is a deficient number, since it is larger than the sum of its proper divisors (993503).

2683681 is a wasteful number, since it uses less digits than its factorization.

2683681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 414 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 2683681 is about 1638.1944329047. The cubic root of 2683681 is about 138.9665568319.

It can be divided in two parts, 2683 and 681, that added together give a square (3364 = 58²).

The spelling of 2683681 in words is "two million, six hundred eighty-three thousand, six hundred eighty-one".