68356129 has 8 divisors (see below), whose sum is σ = 72031680. Its totient is φ = 64688400.

The previous prime is 68356109. The next prime is 68356153. The reversal of 68356129 is 92165386.

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-68356129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68356091 and 68356100.

It is not an unprimeable number, because it can be changed into a prime (68356109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27519 + ... + 29899.

It is an arithmetic number, because the mean of its divisors is an integer number (9003960).

Almost surely, 2^68356129 is an apocalyptic number.

It is an amenable number.

68356129 is a deficient number, since it is larger than the sum of its proper divisors (3675551).

68356129 is a wasteful number, since it uses less digits than its factorization.

68356129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911.

The product of its digits is 77760, while the sum is 40.

The square root of 68356129 is about 8267.7765451178. The cubic root of 68356129 is about 408.8768168197.

The spelling of 68356129 in words is "sixty-eight million, three hundred fifty-six thousand, one hundred twenty-nine".