68121064 has 24 divisors (see below), whose sum is σ = 140396130. Its totient is φ = 30963680.

The previous prime is 68121041. The next prime is 68121089. The reversal of 68121064 is 46012186.

It can be written as a sum of positive squares in only one way, i.e., 68062500 + 58564 = 8250^2 + 242^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34219 + ... + 36154.

Almost surely, 2^68121064 is an apocalyptic number.

It is an amenable number.

68121064 is an abundant number, since it is smaller than the sum of its proper divisors (72275066).

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

68121064 is a wasteful number, since it uses less digits than its factorization.

68121064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70401 (or 70386 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 68121064 is about 8253.5485701606. The cubic root of 68121064 is about 408.4075928065.

The spelling of 68121064 in words is "sixty-eight million, one hundred twenty-one thousand, sixty-four".