68233940 has 24 divisors (see below), whose sum is σ = 150833760. Its totient is φ = 25856928.

The previous prime is 68233889. The next prime is 68233943. The reversal of 68233940 is 4933286.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68233940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68233943) 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, 89402 + ... + 90161.

It is an arithmetic number, because the mean of its divisors is an integer number (6284740).

Almost surely, 2^68233940 is an apocalyptic number.

It is an amenable number.

68233940 is an abundant number, since it is smaller than the sum of its proper divisors (82599820).

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

68233940 is a wasteful number, since it uses less digits than its factorization.

68233940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179591 (or 179589 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 68233940 is about 8260.3837683246. The cubic root of 68233940 is about 408.6330442506.

The spelling of 68233940 in words is "sixty-eight million, two hundred thirty-three thousand, nine hundred forty".