6441345 has 12 divisors (see below), whose sum is σ = 11165076. Its totient is φ = 3435360.

The previous prime is 6441343. The next prime is 6441349. The reversal of 6441345 is 5431446.

6441345 is a `hidden beast` number, since 644 + 13 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 2509056 = 1983^2 + 1584^2 .

It is not a de Polignac number, because 6441345 - 2¹ = 6441343 is a prime.

6441345 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6441343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71526 + ... + 71615.

It is an arithmetic number, because the mean of its divisors is an integer number (930423).

Almost surely, 2^6441345 is an apocalyptic number.

It is an amenable number.

6441345 is a deficient number, since it is larger than the sum of its proper divisors (4723731).

6441345 is a wasteful number, since it uses less digits than its factorization.

6441345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143152 (or 143149 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 6441345 is about 2537.9804963790. The cubic root of 6441345 is about 186.0625006747.

It can be divided in two parts, 6441 and 345, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 6441345 in words is "six million, four hundred forty-one thousand, three hundred forty-five".