2680345 has 4 divisors (see below), whose sum is σ = 3216420. Its totient is φ = 2144272.

The previous prime is 2680313. The next prime is 2680357. The reversal of 2680345 is 5430862.

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 927369 + 1752976 = 963^2 + 1324^2 .

It is a cyclic number.

It is not a de Polignac number, because 2680345 - 2⁵ = 2680313 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, 268030 + ... + 268039.

It is an arithmetic number, because the mean of its divisors is an integer number (804105).

2^2680345 is an apocalyptic number.

It is an amenable number.

2680345 is a deficient number, since it is larger than the sum of its proper divisors (536075).

2680345 is an equidigital number, since it uses as much as digits as its factorization.

2680345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536074.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2680345 is about 1637.1759221293. The cubic root of 2680345 is about 138.9089512945.

It can be divided in two parts, 2680 and 345, that added together give a square (3025 = 55²).

The spelling of 2680345 in words is "two million, six hundred eighty thousand, three hundred forty-five".