68788117 has 8 divisors (see below), whose sum is σ = 70239960. Its totient is φ = 67342080.

The previous prime is 68788099. The next prime is 68788123. The reversal of 68788117 is 71188786.

It can be written as a sum of positive squares in 4 ways, for example, as 9205156 + 59582961 = 3034^2 + 7719^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68788117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68788127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29017 + ... + 31297.

It is an arithmetic number, because the mean of its divisors is an integer number (8779995).

Almost surely, 2^68788117 is an apocalyptic number.

It is an amenable number.

68788117 is a deficient number, since it is larger than the sum of its proper divisors (1451843).

68788117 is a wasteful number, since it uses less digits than its factorization.

68788117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903.

The product of its digits is 150528, while the sum is 46.

The square root of 68788117 is about 8293.8601989665. The cubic root of 68788117 is about 409.7363305707.

It can be divided in two parts, 687 and 88117, that added together give a square (88804 = 298²).

The spelling of 68788117 in words is "sixty-eight million, seven hundred eighty-eight thousand, one hundred seventeen".