68635697 has 16 divisors (see below), whose sum is σ = 76137600. Its totient is φ = 61471872.

The previous prime is 68635687. The next prime is 68635709. The reversal of 68635697 is 79653686.

It is a cyclic number.

It is not a de Polignac number, because 68635697 - 2¹⁸ = 68373553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68635607) 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 in 15 ways as a sum of consecutive naturals, for example, 110933 + ... + 111549.

It is an arithmetic number, because the mean of its divisors is an integer number (4758600).

Almost surely, 2^68635697 is an apocalyptic number.

It is an amenable number.

68635697 is a deficient number, since it is larger than the sum of its proper divisors (7501903).

68635697 is a wasteful number, since it uses less digits than its factorization.

68635697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872.

The product of its digits is 1632960, while the sum is 50.

The square root of 68635697 is about 8284.6663783160. Note that the first 3 decimals coincide. The cubic root of 68635697 is about 409.4334769290.

The spelling of 68635697 in words is "sixty-eight million, six hundred thirty-five thousand, six hundred ninety-seven".