2640682 has 16 divisors (see below), whose sum is σ = 4471200. Its totient is φ = 1158640.

The previous prime is 2640643. The next prime is 2640683. The reversal of 2640682 is 2860462.

It is a self number, because there is not a number n which added to its sum of digits gives 2640682.

It is not an unprimeable number, because it can be changed into a prime (2640683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432 + ... + 2707.

It is an arithmetic number, because the mean of its divisors is an integer number (279450).

2^2640682 is an apocalyptic number.

2640682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2640682 is a deficient number, since it is larger than the sum of its proper divisors (1830518).

2640682 is a wasteful number, since it uses less digits than its factorization.

2640682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2640682 is about 1625.0175383669. The cubic root of 2640682 is about 138.2203648600.

The spelling of 2640682 in words is "two million, six hundred forty thousand, six hundred eighty-two".