68129316 has 24 divisors (see below), whose sum is σ = 176631840. Its totient is φ = 22709736.

The previous prime is 68129311. The next prime is 68129333. The reversal of 68129316 is 61392186.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (68129311) 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, 315306 + ... + 315521.

It is an arithmetic number, because the mean of its divisors is an integer number (7359660).

Almost surely, 2^68129316 is an apocalyptic number.

It is an amenable number.

68129316 is an abundant number, since it is smaller than the sum of its proper divisors (108502524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68129316 is a wasteful number, since it uses less digits than its factorization.

68129316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630840 (or 630832 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 68129316 is about 8254.0484612098. The cubic root of 68129316 is about 408.4240832682.

The spelling of 68129316 in words is "sixty-eight million, one hundred twenty-nine thousand, three hundred sixteen".