6967561 has 2 divisors, whose sum is σ = 6967562. Its totient is φ = 6967560.

The previous prime is 6967559. The next prime is 6967573. The reversal of 6967561 is 1657696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6943225 + 24336 = 2635^2 + 156^2 .

It is a cyclic number.

It is not a de Polignac number, because 6967561 - 2¹ = 6967559 is a prime.

Together with 6967559, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6967361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3483780 + 3483781.

It is an arithmetic number, because the mean of its divisors is an integer number (3483781).

Almost surely, 2^6967561 is an apocalyptic number.

It is an amenable number.

6967561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6967561 is an equidigital number, since it uses as much as digits as its factorization.

6967561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68040, while the sum is 40.

The square root of 6967561 is about 2639.6137975090. The cubic root of 6967561 is about 190.9971674333.

The spelling of 6967561 in words is "six million, nine hundred sixty-seven thousand, five hundred sixty-one".