6985565449 has 2 divisors, whose sum is σ = 6985565450. Its totient is φ = 6985565448.

The previous prime is 6985565429. The next prime is 6985565459. The reversal of 6985565449 is 9445655896.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4423181049 + 2562384400 = 66507^2 + 50620^2 .

It is a cyclic number.

It is not a de Polignac number, because 6985565449 - 2¹¹ = 6985563401 is a prime.

It is not a weakly prime, because it can be changed into another prime (6985565429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492782724 + 3492782725.

It is an arithmetic number, because the mean of its divisors is an integer number (3492782725).

Almost surely, 2^6985565449 is an apocalyptic number.

It is an amenable number.

6985565449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6985565449 is an equidigital number, since it uses as much as digits as its factorization.

6985565449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656000, while the sum is 61.

The square root of 6985565449 is about 83579.6951956634. The cubic root of 6985565449 is about 1911.6154063881.

The spelling of 6985565449 in words is "six billion, nine hundred eighty-five million, five hundred sixty-five thousand, four hundred forty-nine".