695668 has 6 divisors (see below), whose sum is σ = 1217426. Its totient is φ = 347832.

The previous prime is 695663. The next prime is 695677. The reversal of 695668 is 866596.

It can be written as a sum of positive squares in only one way, i.e., 574564 + 121104 = 758^2 + 348^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 695668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86955 + ... + 86962.

2⁶⁹⁵⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

695668 is a deficient number, since it is larger than the sum of its proper divisors (521758).

695668 is a wasteful number, since it uses less digits than its factorization.

695668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173921 (or 173919 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 695668 is about 834.0671435802. The cubic root of 695668 is about 88.6068591218.

The spelling of 695668 in words is "six hundred ninety-five thousand, six hundred sixty-eight".