2686720 has 36 divisors (see below), whose sum is σ = 6438600. Its totient is φ = 1074176.

The previous prime is 2686709. The next prime is 2686751. The reversal of 2686720 is 276862.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231 + ... + 2329.

It is an arithmetic number, because the mean of its divisors is an integer number (178850).

2^2686720 is an apocalyptic number.

2686720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2686720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3219300).

2686720 is an abundant number, since it is smaller than the sum of its proper divisors (3751880).

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

2686720 is an equidigital number, since it uses as much as digits as its factorization.

2686720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2106 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2686720 is about 1639.1217160419. The cubic root of 2686720 is about 139.0189922809.

The spelling of 2686720 in words is "two million, six hundred eighty-six thousand, seven hundred twenty".