68761968 has 80 divisors (see below), whose sum is σ = 200082432. Its totient is φ = 20160000.

The previous prime is 68761967. The next prime is 68762003. The reversal of 68761968 is 86916786.

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 68761968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68761967) 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, 14268 + ... + 18468.

Almost surely, 2^68761968 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 68761968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100041216).

68761968 is an abundant number, since it is smaller than the sum of its proper divisors (131320464).

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

68761968 is a wasteful number, since it uses less digits than its factorization.

68761968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4254 (or 4248 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 68761968 is about 8292.2836420373. The cubic root of 68761968 is about 409.6844051622.

The spelling of 68761968 in words is "sixty-eight million, seven hundred sixty-one thousand, nine hundred sixty-eight".