68431056 has 80 divisors (see below), whose sum is σ = 185238144. Its totient is φ = 21745152.

The previous prime is 68431031. The next prime is 68431057. The reversal of 68431056 is 65013486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68431057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93765 + ... + 94491.

Almost surely, 2^68431056 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 68431056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92619072).

68431056 is an abundant number, since it is smaller than the sum of its proper divisors (116807088).

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

68431056 is a wasteful number, since it uses less digits than its factorization.

68431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 68431056 is about 8272.3065707214. The cubic root of 68431056 is about 409.0261559104.

The spelling of 68431056 in words is "sixty-eight million, four hundred thirty-one thousand, fifty-six".