68121308 has 24 divisors (see below), whose sum is σ = 130945920. Its totient is φ = 30864240.

The previous prime is 68121307. The next prime is 68121343. The reversal of 68121308 is 80312186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68121307) 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, 17738 + ... + 21233.

It is an arithmetic number, because the mean of its divisors is an integer number (5456080).

Almost surely, 2^68121308 is an apocalyptic number.

It is an amenable number.

68121308 is a deficient number, since it is larger than the sum of its proper divisors (62824612).

68121308 is a wasteful number, since it uses less digits than its factorization.

68121308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39017 (or 39015 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68121308 is about 8253.5633516682. The cubic root of 68121308 is about 408.4080804253.

The spelling of 68121308 in words is "sixty-eight million, one hundred twenty-one thousand, three hundred eight".