6766878337 has 2 divisors, whose sum is σ = 6766878338. Its totient is φ = 6766878336.

The previous prime is 6766878319. The next prime is 6766878341. The reversal of 6766878337 is 7338786676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6763253121 + 3625216 = 82239^2 + 1904^2 .

It is a cyclic number.

It is not a de Polignac number, because 6766878337 - 2¹¹ = 6766876289 is a prime.

It is not a weakly prime, because it can be changed into another prime (6766878317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3383439168 + 3383439169.

It is an arithmetic number, because the mean of its divisors is an integer number (3383439169).

Almost surely, 2^6766878337 is an apocalyptic number.

It is an amenable number.

6766878337 is a deficient number, since it is larger than the sum of its proper divisors (1).

6766878337 is an equidigital number, since it uses as much as digits as its factorization.

6766878337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42674688, while the sum is 61.

The square root of 6766878337 is about 82261.0377821724. The cubic root of 6766878337 is about 1891.4554764725.

The spelling of 6766878337 in words is "six billion, seven hundred sixty-six million, eight hundred seventy-eight thousand, three hundred thirty-seven".