2720680 has 32 divisors (see below), whose sum is σ = 6483240. Its totient is φ = 1024000.

The previous prime is 2720677. The next prime is 2720687. The reversal of 2720680 is 860272.

It can be written as a sum of positive squares in 4 ways, for example, as 1833316 + 887364 = 1354^2 + 942^2 .

It is not an unprimeable number, because it can be changed into a prime (2720687) 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, 1321 + ... + 2680.

2^2720680 is an apocalyptic number.

2720680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2720680 is an abundant number, since it is smaller than the sum of its proper divisors (3762560).

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

2720680 is a wasteful number, since it uses less digits than its factorization.

2720680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2720680 is about 1649.4483926453. The cubic root of 2720680 is about 139.6022725223.

It can be divided in two parts, 2720 and 680, that multiplied together give a square (1849600 = 1360²).

The spelling of 2720680 in words is "two million, seven hundred twenty thousand, six hundred eighty".