2680745 has 4 divisors (see below), whose sum is σ = 3216900. Its totient is φ = 2144592.

The previous prime is 2680721. The next prime is 2680753. The reversal of 2680745 is 5470862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1968409 + 712336 = 1403^2 + 844^2 .

It is a cyclic number.

It is not a de Polignac number, because 2680745 - 2⁶ = 2680681 is a prime.

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, 268070 + ... + 268079.

It is an arithmetic number, because the mean of its divisors is an integer number (804225).

2^2680745 is an apocalyptic number.

It is an amenable number.

2680745 is a deficient number, since it is larger than the sum of its proper divisors (536155).

2680745 is an equidigital number, since it uses as much as digits as its factorization.

2680745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536154.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 2680745 is about 1637.2980791536. The cubic root of 2680745 is about 138.9158609543.

The spelling of 2680745 in words is "two million, six hundred eighty thousand, seven hundred forty-five".