6906077881 has 2 divisors, whose sum is σ = 6906077882. Its totient is φ = 6906077880.

The previous prime is 6906077837. The next prime is 6906077887. The reversal of 6906077881 is 1887706096.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6883191225 + 22886656 = 82965^2 + 4784^2 .

It is a cyclic number.

It is not a de Polignac number, because 6906077881 - 2¹⁷ = 6905946809 is a prime.

It is a super-2 number, since 2×6906077881² = 95387823396874900322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6906077887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3453038940 + 3453038941.

It is an arithmetic number, because the mean of its divisors is an integer number (3453038941).

Almost surely, 2^6906077881 is an apocalyptic number.

It is an amenable number.

6906077881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6906077881 is an equidigital number, since it uses as much as digits as its factorization.

6906077881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 6906077881 is about 83102.8151207888. The cubic root of 6906077881 is about 1904.3370804154.

The spelling of 6906077881 in words is "six billion, nine hundred six million, seventy-seven thousand, eight hundred eighty-one".