68551968 has 48 divisors (see below), whose sum is σ = 180756576. Its totient is φ = 22748160.

The previous prime is 68551927. The next prime is 68551979. The reversal of 68551968 is 86915586.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21655 + ... + 24617.

It is an arithmetic number, because the mean of its divisors is an integer number (3765762).

Almost surely, 2^68551968 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 68551968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90378288).

68551968 is an abundant number, since it is smaller than the sum of its proper divisors (112204608).

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

68551968 is a wasteful number, since it uses less digits than its factorization.

68551968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3217 (or 3209 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 68551968 is about 8279.6115850926. The cubic root of 68551968 is about 409.2669192602.

The spelling of 68551968 in words is "sixty-eight million, five hundred fifty-one thousand, nine hundred sixty-eight".