2680705 has 4 divisors (see below), whose sum is σ = 3216852. Its totient is φ = 2144560.

The previous prime is 2680697. The next prime is 2680709. The reversal of 2680705 is 5070862.

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 1540081 + 1140624 = 1241^2 + 1068^2 .

It is not a de Polignac number, because 2680705 - 2³ = 2680697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2680709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268066 + ... + 268075.

It is an arithmetic number, because the mean of its divisors is an integer number (804213).

2^2680705 is an apocalyptic number.

It is an amenable number.

2680705 is a deficient number, since it is larger than the sum of its proper divisors (536147).

2680705 is an equidigital number, since it uses as much as digits as its factorization.

2680705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536146.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2680705 is about 1637.2858638613. The cubic root of 2680705 is about 138.9151700193.

The spelling of 2680705 in words is "two million, six hundred eighty thousand, seven hundred five".