68319888 has 80 divisors (see below), whose sum is σ = 217236096. Its totient is φ = 18017280.

The previous prime is 68319887. The next prime is 68319919. The reversal of 68319888 is 88891386.

It is a happy number.

It is a super-3 number, since 3×68319888³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68319888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68319883) 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, 3453 + ... + 12188.

Almost surely, 2^68319888 is an apocalyptic number.

It is an amenable number.

68319888 is an abundant number, since it is smaller than the sum of its proper divisors (148916208).

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

68319888 is a wasteful number, since it uses less digits than its factorization.

68319888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672 (or 15666 counting only the distinct ones).

The product of its digits is 663552, while the sum is 51.

The square root of 68319888 is about 8265.5845528311. The cubic root of 68319888 is about 408.8045447135.

The spelling of 68319888 in words is "sixty-eight million, three hundred nineteen thousand, eight hundred eighty-eight".