68538768 has 40 divisors (see below), whose sum is σ = 182774016. Its totient is φ = 22108800.

The previous prime is 68538761. The next prime is 68538773. The reversal of 68538768 is 86783586.

It is a self number, because there is not a number n which added to its sum of digits gives 68538768.

It is not an unprimeable number, because it can be changed into a prime (68538761) 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, 21543 + ... + 24518.

Almost surely, 2^68538768 is an apocalyptic number.

It is an amenable number.

68538768 is an abundant number, since it is smaller than the sum of its proper divisors (114235248).

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

68538768 is a wasteful number, since it uses less digits than its factorization.

68538768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46103 (or 46097 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The square root of 68538768 is about 8278.8144078727. The cubic root of 68538768 is about 409.2406488249.

The spelling of 68538768 in words is "sixty-eight million, five hundred thirty-eight thousand, seven hundred sixty-eight".