696776156866 has 4 divisors (see below), whose sum is σ = 1045164235302. Its totient is φ = 348388078432.

The previous prime is 696776156863. The next prime is 696776156917. The reversal of 696776156866 is 668651677696.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 629199554841 + 67576602025 = 793221^2 + 259955^2 .

It is not an unprimeable number, because it can be changed into a prime (696776156861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174194039215 + ... + 174194039218.

Almost surely, 2^696776156866 is an apocalyptic number.

696776156866 is a deficient number, since it is larger than the sum of its proper divisors (348388078436).

696776156866 is a wasteful number, since it uses less digits than its factorization.

696776156866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348388078435.

The product of its digits is 823011840, while the sum is 73.

The spelling of 696776156866 in words is "six hundred ninety-six billion, seven hundred seventy-six million, one hundred fifty-six thousand, eight hundred sixty-six".