2640860 has 24 divisors (see below), whose sum is σ = 5787936. Its totient is φ = 1010240.

The previous prime is 2640857. The next prime is 2640863. The reversal of 2640860 is 680462.

2640860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2640857) and next prime (2640863).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640863) 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, 2411 + ... + 3330.

It is an arithmetic number, because the mean of its divisors is an integer number (241164).

2^2640860 is an apocalyptic number.

2640860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640860 is an abundant number, since it is smaller than the sum of its proper divisors (3147076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2640860 is a wasteful number, since it uses less digits than its factorization.

2640860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773 (or 5771 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2640860 is about 1625.0723060836. The cubic root of 2640860 is about 138.2234704557.

The spelling of 2640860 in words is "two million, six hundred forty thousand, eight hundred sixty".