67695562656 has 72 divisors (see below), whose sum is σ = 192570077700. Its totient is φ = 22558058496.

The previous prime is 67695562639. The next prime is 67695562771. The reversal of 67695562656 is 65626559676.

67695562656 is a `hidden beast` number, since 6 + 7 + 6 + 9 + 5 + 562 + 65 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 58380224400 + 9315338256 = 241620^2 + 96516^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 67695562593 and 67695562602.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 918670 + ... + 989618.

Almost surely, 2^67695562656 is an apocalyptic number.

It is an amenable number.

67695562656 is an abundant number, since it is smaller than the sum of its proper divisors (124874515044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67695562656 is a wasteful number, since it uses less digits than its factorization.

67695562656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74278 (or 74267 counting only the distinct ones).

The product of its digits is 122472000, while the sum is 63.

The spelling of 67695562656 in words is "sixty-seven billion, six hundred ninety-five million, five hundred sixty-two thousand, six hundred fifty-six".