6695561 has 2 divisors, whose sum is σ = 6695562. Its totient is φ = 6695560.

The previous prime is 6695539. The next prime is 6695617. The reversal of 6695561 is 1655966.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5359225 + 1336336 = 2315^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 6695561 - 2¹⁰ = 6694537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6694561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3347780 + 3347781.

It is an arithmetic number, because the mean of its divisors is an integer number (3347781).

Almost surely, 2^6695561 is an apocalyptic number.

It is an amenable number.

6695561 is a deficient number, since it is larger than the sum of its proper divisors (1).

6695561 is an equidigital number, since it uses as much as digits as its factorization.

6695561 is an evil number, because the sum of its binary digits is even.

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

The square root of 6695561 is about 2587.5782113784. The cubic root of 6695561 is about 188.4787199791.

The spelling of 6695561 in words is "six million, six hundred ninety-five thousand, five hundred sixty-one".