695561 has 2 divisors, whose sum is σ = 695562. Its totient is φ = 695560.

The previous prime is 695509. The next prime is 695567. The reversal of 695561 is 165596.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 430336 + 265225 = 656^2 + 515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-695561 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 695561.

It is not a weakly prime, because it can be changed into another prime (695567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347780 + 347781.

It is an arithmetic number, because the mean of its divisors is an integer number (347781).

2⁶⁹⁵⁵⁶¹ is an apocalyptic number.

It is an amenable number.

695561 is a deficient number, since it is larger than the sum of its proper divisors (1).

695561 is an equidigital number, since it uses as much as digits as its factorization.

695561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 32.

The square root of 695561 is about 834.0029975965. The cubic root of 695561 is about 88.6023160447.

The spelling of 695561 in words is "six hundred ninety-five thousand, five hundred sixty-one".