695069681 has 2 divisors, whose sum is σ = 695069682. Its totient is φ = 695069680.

The previous prime is 695069663. The next prime is 695069707. The reversal of 695069681 is 186960596.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632975281 + 62094400 = 25159^2 + 7880^2 .

It is a cyclic number.

It is not a de Polignac number, because 695069681 - 2¹⁰ = 695068657 is a prime.

It is a super-2 number, since 2×695069681² = 966243722890883522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (695062681) 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, 347534840 + 347534841.

It is an arithmetic number, because the mean of its divisors is an integer number (347534841).

Almost surely, 2^695069681 is an apocalyptic number.

It is an amenable number.

695069681 is a deficient number, since it is larger than the sum of its proper divisors (1).

695069681 is an equidigital number, since it uses as much as digits as its factorization.

695069681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 695069681 is about 26364.1741952977. The cubic root of 695069681 is about 885.8144931257.

The spelling of 695069681 in words is "six hundred ninety-five million, sixty-nine thousand, six hundred eighty-one".