6997870613 has 2 divisors, whose sum is σ = 6997870614. Its totient is φ = 6997870612.

The previous prime is 6997870609. The next prime is 6997870637. The reversal of 6997870613 is 3160787996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6590517124 + 407353489 = 81182^2 + 20183^2 .

It is a cyclic number.

It is not a de Polignac number, because 6997870613 - 2² = 6997870609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6997870673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498935306 + 3498935307.

It is an arithmetic number, because the mean of its divisors is an integer number (3498935307).

Almost surely, 2^6997870613 is an apocalyptic number.

It is an amenable number.

6997870613 is a deficient number, since it is larger than the sum of its proper divisors (1).

6997870613 is an equidigital number, since it uses as much as digits as its factorization.

6997870613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3429216, while the sum is 56.

The square root of 6997870613 is about 83653.2761641766. The cubic root of 6997870613 is about 1912.7371930629.

The spelling of 6997870613 in words is "six billion, nine hundred ninety-seven million, eight hundred seventy thousand, six hundred thirteen".