6541345 has 16 divisors (see below), whose sum is σ = 8518608. Its totient is φ = 4802560.

The previous prime is 6541343. The next prime is 6541351. The reversal of 6541345 is 5431456.

6541345 = 1808² + 1809².

It can be written as a sum of positive squares in 8 ways, for example, as 130321 + 6411024 = 361^2 + 2532^2 .

It is not a de Polignac number, because 6541345 - 2¹ = 6541343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2547 + ... + 4423.

It is an arithmetic number, because the mean of its divisors is an integer number (532413).

Almost surely, 2^6541345 is an apocalyptic number.

6541345 is the 1809-th centered square number.

It is an amenable number.

6541345 is a deficient number, since it is larger than the sum of its proper divisors (1977263).

6541345 is a wasteful number, since it uses less digits than its factorization.

6541345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940.

The product of its digits is 7200, while the sum is 28.

The square root of 6541345 is about 2557.6053252994. The cubic root of 6541345 is about 187.0204158556.

It can be divided in two parts, 6541 and 345, that added together give a palindrome (6886).

The spelling of 6541345 in words is "six million, five hundred forty-one thousand, three hundred forty-five".