68608917 has 32 divisors (see below), whose sum is σ = 111350400. Its totient is φ = 41492736.

The previous prime is 68608913. The next prime is 68608961. The reversal of 68608917 is 71980686.

It is a happy number.

It is not a de Polignac number, because 68608917 - 2² = 68608913 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68608913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19053 + ... + 22365.

It is an arithmetic number, because the mean of its divisors is an integer number (3479700).

Almost surely, 2^68608917 is an apocalyptic number.

It is an amenable number.

68608917 is a deficient number, since it is larger than the sum of its proper divisors (42741483).

68608917 is a wasteful number, since it uses less digits than its factorization.

68608917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394 (or 3388 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 68608917 is about 8283.0499817398. The cubic root of 68608917 is about 409.3802196332.

The spelling of 68608917 in words is "sixty-eight million, six hundred eight thousand, nine hundred seventeen".