68193888 has 192 divisors, whose sum is σ = 221760000. Its totient is φ = 18289152.

The previous prime is 68193883. The next prime is 68193889. The reversal of 68193888 is 88839186.

It is a happy number.

Its product of digits (663552) is a multiple of the sum of its prime factors (162).

It is a self number, because there is not a number n which added to its sum of digits gives 68193888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68193883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625578 + ... + 625686.

It is an arithmetic number, because the mean of its divisors is an integer number (1155000).

Almost surely, 2^68193888 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 68193888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110880000).

68193888 is an abundant number, since it is smaller than the sum of its proper divisors (153566112).

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

68193888 is a wasteful number, since it uses less digits than its factorization.

68193888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 140 counting only the distinct ones).

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

The square root of 68193888 is about 8257.9590698913. The cubic root of 68193888 is about 408.5530753768.

The spelling of 68193888 in words is "sixty-eight million, one hundred ninety-three thousand, eight hundred eighty-eight".