6861286177 has 2 divisors, whose sum is σ = 6861286178. Its totient is φ = 6861286176.

The previous prime is 6861286171. The next prime is 6861286199. The reversal of 6861286177 is 7716821686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6567643681 + 293642496 = 81041^2 + 17136^2 .

It is a cyclic number.

It is not a de Polignac number, because 6861286177 - 2³¹ = 4713802529 is a prime.

It is not a weakly prime, because it can be changed into another prime (6861286171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3430643088 + 3430643089.

It is an arithmetic number, because the mean of its divisors is an integer number (3430643089).

Almost surely, 2^6861286177 is an apocalyptic number.

It is an amenable number.

6861286177 is a deficient number, since it is larger than the sum of its proper divisors (1).

6861286177 is an equidigital number, since it uses as much as digits as its factorization.

6861286177 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 52.

The square root of 6861286177 is about 82832.8810135202. The cubic root of 6861286177 is about 1900.2110732267.

The spelling of 6861286177 in words is "six billion, eight hundred sixty-one million, two hundred eighty-six thousand, one hundred seventy-seven".