6578345449 has 27 divisors (see below), whose sum is σ = 7587637317. Its totient is φ = 5699551104.

The previous prime is 6578345419. The next prime is 6578345467. The reversal of 6578345449 is 9445438756.

The square root of 6578345449 is 81107.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 59397849 + 6518947600 = 7707^2 + 80740^2 .

It is not a de Polignac number, because 6578345449 - 2⁹ = 6578344937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6578345449.

It is not an unprimeable number, because it can be changed into a prime (6578345419) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 17924464 + ... + 17924830.

Almost surely, 2^6578345449 is an apocalyptic number.

6578345449 is the 81107-th square number.

6578345449 is the 40554-th centered octagonal number.

It is an amenable number.

6578345449 is a deficient number, since it is larger than the sum of its proper divisors (1009291868).

6578345449 is an equidigital number, since it uses as much as digits as its factorization.

6578345449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 397 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 55.

The cubic root of 6578345449 is about 1873.7237370134.

The spelling of 6578345449 in words is "six billion, five hundred seventy-eight million, three hundred forty-five thousand, four hundred forty-nine".