6998597513 has 2 divisors, whose sum is σ = 6998597514. Its totient is φ = 6998597512.

The previous prime is 6998597453. The next prime is 6998597537. The reversal of 6998597513 is 3157958996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6867105424 + 131492089 = 82868^2 + 11467^2 .

It is a cyclic number.

It is not a de Polignac number, because 6998597513 - 2¹⁴ = 6998581129 is a prime.

It is not a weakly prime, because it can be changed into another prime (6998597563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499298756 + 3499298757.

It is an arithmetic number, because the mean of its divisors is an integer number (3499298757).

Almost surely, 2^6998597513 is an apocalyptic number.

It is an amenable number.

6998597513 is a deficient number, since it is larger than the sum of its proper divisors (1).

6998597513 is an equidigital number, since it uses as much as digits as its factorization.

6998597513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18370800, while the sum is 62.

The square root of 6998597513 is about 83657.6207706148. The cubic root of 6998597513 is about 1912.8034189481.

The spelling of 6998597513 in words is "six billion, nine hundred ninety-eight million, five hundred ninety-seven thousand, five hundred thirteen".