68488768 has 56 divisors (see below), whose sum is σ = 144393920. Its totient is φ = 32140800.

The previous prime is 68488759. The next prime is 68488769. The reversal of 68488768 is 86788486.

It is a super-2 number, since 2×68488768² = 9381422684315648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68488769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183430 + ... + 183802.

Almost surely, 2^68488768 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 68488768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72196960).

68488768 is an abundant number, since it is smaller than the sum of its proper divisors (75905152).

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

68488768 is a wasteful number, since it uses less digits than its factorization.

68488768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 545 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 55.

The square root of 68488768 is about 8275.7941008703. The cubic root of 68488768 is about 409.1411090032.

The spelling of 68488768 in words is "sixty-eight million, four hundred eighty-eight thousand, seven hundred sixty-eight".