2684345 has 4 divisors (see below), whose sum is σ = 3221220. Its totient is φ = 2147472.

The previous prime is 2684333. The next prime is 2684347. The reversal of 2684345 is 5434862.

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 1951609 + 732736 = 1397^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 2684345 - 2¹⁰ = 2683321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2684347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268430 + ... + 268439.

It is an arithmetic number, because the mean of its divisors is an integer number (805305).

2^2684345 is an apocalyptic number.

It is an amenable number.

2684345 is a deficient number, since it is larger than the sum of its proper divisors (536875).

2684345 is an equidigital number, since it uses as much as digits as its factorization.

2684345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536874.

The product of its digits is 23040, while the sum is 32.

The square root of 2684345 is about 1638.3970825169. The cubic root of 2684345 is about 138.9780169849.

The spelling of 2684345 in words is "two million, six hundred eighty-four thousand, three hundred forty-five".