695559647 has 2 divisors, whose sum is σ = 695559648. Its totient is φ = 695559646.

The previous prime is 695559587. The next prime is 695559649. The reversal of 695559647 is 746955596.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 695559647 - 2¹⁰ = 695558623 is a prime.

Together with 695559649, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 695559592 and 695559601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (695559649) 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, 347779823 + 347779824.

It is an arithmetic number, because the mean of its divisors is an integer number (347779824).

Almost surely, 2^695559647 is an apocalyptic number.

695559647 is a deficient number, since it is larger than the sum of its proper divisors (1).

695559647 is an equidigital number, since it uses as much as digits as its factorization.

695559647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206000, while the sum is 56.

The square root of 695559647 is about 26373.4648273601. The cubic root of 695559647 is about 886.0225859512.

The spelling of 695559647 in words is "six hundred ninety-five million, five hundred fifty-nine thousand, six hundred forty-seven".