6697905761 has 2 divisors, whose sum is σ = 6697905762. Its totient is φ = 6697905760.

The previous prime is 6697905757. The next prime is 6697905763. The reversal of 6697905761 is 1675097966.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6600587536 + 97318225 = 81244^2 + 9865^2 .

It is a cyclic number.

It is not a de Polignac number, because 6697905761 - 2² = 6697905757 is a prime.

Together with 6697905763, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6697905697 and 6697905706.

It is not a weakly prime, because it can be changed into another prime (6697905763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3348952880 + 3348952881.

It is an arithmetic number, because the mean of its divisors is an integer number (3348952881).

Almost surely, 2^6697905761 is an apocalyptic number.

It is an amenable number.

6697905761 is a deficient number, since it is larger than the sum of its proper divisors (1).

6697905761 is an equidigital number, since it uses as much as digits as its factorization.

6697905761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4286520, while the sum is 56.

The square root of 6697905761 is about 81840.7341181639. The cubic root of 6697905761 is about 1885.0071893100.

The spelling of 6697905761 in words is "six billion, six hundred ninety-seven million, nine hundred five thousand, seven hundred sixty-one".