68340129 has 32 divisors (see below), whose sum is σ = 107657088. Its totient is φ = 38016000.

The previous prime is 68340109. The next prime is 68340137. The reversal of 68340129 is 92104386.

It is not a de Polignac number, because 68340129 - 2⁹ = 68339617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68340129.

It is not an unprimeable number, because it can be changed into a prime (68340109) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103059 + ... + 103719.

It is an arithmetic number, because the mean of its divisors is an integer number (3364284).

Almost surely, 2^68340129 is an apocalyptic number.

It is an amenable number.

68340129 is a deficient number, since it is larger than the sum of its proper divisors (39316959).

68340129 is a wasteful number, since it uses less digits than its factorization.

68340129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 68340129 is about 8266.8088764650. The cubic root of 68340129 is about 408.8449126357.

The spelling of 68340129 in words is "sixty-eight million, three hundred forty thousand, one hundred twenty-nine".