6861497413 has 2 divisors, whose sum is σ = 6861497414. Its totient is φ = 6861497412.

The previous prime is 6861497389. The next prime is 6861497497. The reversal of 6861497413 is 3147941686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6818960929 + 42536484 = 82577^2 + 6522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6861497413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6861495413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430748706 + 3430748707.

It is an arithmetic number, because the mean of its divisors is an integer number (3430748707).

Almost surely, 2^6861497413 is an apocalyptic number.

It is an amenable number.

6861497413 is a deficient number, since it is larger than the sum of its proper divisors (1).

6861497413 is an equidigital number, since it uses as much as digits as its factorization.

6861497413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 49.

The square root of 6861497413 is about 82834.1560770676. The cubic root of 6861497413 is about 1900.2305734028.

The spelling of 6861497413 in words is "six billion, eight hundred sixty-one million, four hundred ninety-seven thousand, four hundred thirteen".