68033940 has 48 divisors (see below), whose sum is σ = 205150848. Its totient is φ = 16746624.

The previous prime is 68033923. The next prime is 68033947. The reversal of 68033940 is 4933086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68033947) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 42832 + ... + 44391.

It is an arithmetic number, because the mean of its divisors is an integer number (4273976).

Almost surely, 2^68033940 is an apocalyptic number.

68033940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68033940 is an abundant number, since it is smaller than the sum of its proper divisors (137116908).

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

68033940 is a wasteful number, since it uses less digits than its factorization.

68033940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87248 (or 87246 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 68033940 is about 8248.2689092924. The cubic root of 68033940 is about 408.2334064333.

The spelling of 68033940 in words is "sixty-eight million, thirty-three thousand, nine hundred forty".