6956561 has 2 divisors, whose sum is σ = 6956562. Its totient is φ = 6956560.

The previous prime is 6956539. The next prime is 6956563. The reversal of 6956561 is 1656596.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6838225 + 118336 = 2615^2 + 344^2 .

It is a cyclic number.

It is not a de Polignac number, because 6956561 - 2¹⁰ = 6955537 is a prime.

Together with 6956563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6956563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3478280 + 3478281.

It is an arithmetic number, because the mean of its divisors is an integer number (3478281).

Almost surely, 2^6956561 is an apocalyptic number.

It is an amenable number.

6956561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6956561 is an equidigital number, since it uses as much as digits as its factorization.

6956561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 38.

The square root of 6956561 is about 2637.5293363297. The cubic root of 6956561 is about 190.8966025707.

The spelling of 6956561 in words is "six million, nine hundred fifty-six thousand, five hundred sixty-one".