68068940 has 24 divisors (see below), whose sum is σ = 144214560. Its totient is φ = 26985728.

The previous prime is 68068927. The next prime is 68068951. The reversal of 68068940 is 4986086.

It is a super-5 number, since 5×68068940⁵ (a number of 40 digits) contains 55555 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12800 + ... + 17319.

It is an arithmetic number, because the mean of its divisors is an integer number (6008940).

Almost surely, 2^68068940 is an apocalyptic number.

It is an amenable number.

68068940 is an abundant number, since it is smaller than the sum of its proper divisors (76145620).

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

68068940 is a wasteful number, since it uses less digits than its factorization.

68068940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30241 (or 30239 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 68068940 is about 8250.3902937982. The cubic root of 68068940 is about 408.3033995364.

The spelling of 68068940 in words is "sixty-eight million, sixty-eight thousand, nine hundred forty".