6936061681 has 2 divisors, whose sum is σ = 6936061682. Its totient is φ = 6936061680.

The previous prime is 6936061679. The next prime is 6936061697. The reversal of 6936061681 is 1861606396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4721888656 + 2214173025 = 68716^2 + 47055^2 .

It is a cyclic number.

It is not a de Polignac number, because 6936061681 - 2¹ = 6936061679 is a prime.

It is a super-2 number, since 2×6936061681² = 96217903285273091522, which contains 22 as substring.

Together with 6936061679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6936061621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3468030840 + 3468030841.

It is an arithmetic number, because the mean of its divisors is an integer number (3468030841).

Almost surely, 2^6936061681 is an apocalyptic number.

It is an amenable number.

6936061681 is a deficient number, since it is larger than the sum of its proper divisors (1).

6936061681 is an equidigital number, since it uses as much as digits as its factorization.

6936061681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 6936061681 is about 83283.0215650225. The cubic root of 6936061681 is about 1907.0890923292.

The spelling of 6936061681 in words is "six billion, nine hundred thirty-six million, sixty-one thousand, six hundred eighty-one".