68129900 has 36 divisors (see below), whose sum is σ = 148297800. Its totient is φ = 27168000.

The previous prime is 68129869. The next prime is 68129917. The reversal of 68129900 is 992186.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39251 + ... + 40949.

Almost surely, 2^68129900 is an apocalyptic number.

It is an amenable number.

68129900 is an abundant number, since it is smaller than the sum of its proper divisors (80167900).

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

68129900 is a wasteful number, since it uses less digits than its factorization.

68129900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 68129900 is about 8254.0838377133. The cubic root of 68129900 is about 408.4252502596.

The spelling of 68129900 in words is "sixty-eight million, one hundred twenty-nine thousand, nine hundred".