68644768 has 24 divisors (see below), whose sum is σ = 138799332. Its totient is φ = 33394176.

The previous prime is 68644661. The next prime is 68644787. The reversal of 68644768 is 86744686.

It can be written as a sum of positive squares in 2 ways, for example, as 67699984 + 944784 = 8228^2 + 972^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27805 + ... + 30172.

Almost surely, 2^68644768 is an apocalyptic number.

It is an amenable number.

68644768 is an abundant number, since it is smaller than the sum of its proper divisors (70154564).

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

68644768 is a wasteful number, since it uses less digits than its factorization.

68644768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58024 (or 58016 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 49.

The square root of 68644768 is about 8285.2138173978. The cubic root of 68644768 is about 409.4515132553.

It can be divided in two parts, 686 and 44768, that added together give a palindrome (45454).

The spelling of 68644768 in words is "sixty-eight million, six hundred forty-four thousand, seven hundred sixty-eight".