68881056 has 24 divisors (see below), whose sum is σ = 180813024. Its totient is φ = 22960320.

The previous prime is 68881049. The next prime is 68881103. The reversal of 68881056 is 65018886.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 68880999 and 68881017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358660 + ... + 358851.

It is an arithmetic number, because the mean of its divisors is an integer number (7533876).

Almost surely, 2^68881056 is an apocalyptic number.

It is an amenable number.

68881056 is an abundant number, since it is smaller than the sum of its proper divisors (111931968).

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

68881056 is a wasteful number, since it uses less digits than its factorization.

68881056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717524 (or 717516 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 68881056 is about 8299.4611873302. The cubic root of 68881056 is about 409.9207778720.

The spelling of 68881056 in words is "sixty-eight million, eight hundred eighty-one thousand, fifty-six".