68005940 has 96 divisors (see below), whose sum is σ = 162570240. Its totient is φ = 23760000.

The previous prime is 68005939. The next prime is 68005979. The reversal of 68005940 is 4950086.

It is a junction number, because it is equal to n+sod(n) for n = 68005897 and 68005906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270815 + ... + 271065.

It is an arithmetic number, because the mean of its divisors is an integer number (1693440).

Almost surely, 2^68005940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68005940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81285120).

68005940 is an abundant number, since it is smaller than the sum of its proper divisors (94564300).

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

68005940 is a wasteful number, since it uses less digits than its factorization.

68005940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 331 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 68005940 is about 8246.5714087735. The cubic root of 68005940 is about 408.1773946650.

The spelling of 68005940 in words is "sixty-eight million, five thousand, nine hundred forty".