6867621317 has 2 divisors, whose sum is σ = 6867621318. Its totient is φ = 6867621316.

The previous prime is 6867621287. The next prime is 6867621329. The reversal of 6867621317 is 7131267686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4185313636 + 2682307681 = 64694^2 + 51791^2 .

It is a cyclic number.

It is not a de Polignac number, because 6867621317 - 2¹² = 6867617221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6867621347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3433810658 + 3433810659.

It is an arithmetic number, because the mean of its divisors is an integer number (3433810659).

Almost surely, 2^6867621317 is an apocalyptic number.

It is an amenable number.

6867621317 is a deficient number, since it is larger than the sum of its proper divisors (1).

6867621317 is an equidigital number, since it uses as much as digits as its factorization.

6867621317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 6867621317 is about 82871.1126810784. The cubic root of 6867621317 is about 1900.7957255194.

The spelling of 6867621317 in words is "six billion, eight hundred sixty-seven million, six hundred twenty-one thousand, three hundred seventeen".