68263888 has 80 divisors (see below), whose sum is σ = 167560704. Its totient is φ = 26167680.

The previous prime is 68263859. The next prime is 68263889. The reversal of 68263888 is 88836286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68263889) 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, 82131 + ... + 82957.

Almost surely, 2^68263888 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 68263888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83780352).

68263888 is an abundant number, since it is smaller than the sum of its proper divisors (99296816).

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

68263888 is a wasteful number, since it uses less digits than its factorization.

68263888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 914 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The square root of 68263888 is about 8262.1963181711. The cubic root of 68263888 is about 408.6928187678.

The spelling of 68263888 in words is "sixty-eight million, two hundred sixty-three thousand, eight hundred eighty-eight".