68544642 has 8 divisors (see below), whose sum is σ = 137089296. Its totient is φ = 22848212.

The previous prime is 68544631. The next prime is 68544643. The reversal of 68544642 is 24644586.

It is a sphenic number, since it is the product of 3 distinct primes.

68544642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 68544642.

It is not an unprimeable number, because it can be changed into a prime (68544643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5712048 + ... + 5712059.

It is an arithmetic number, because the mean of its divisors is an integer number (17136162).

Almost surely, 2^68544642 is an apocalyptic number.

68544642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68544642 is a wasteful number, since it uses less digits than its factorization.

68544642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11424112.

The product of its digits is 184320, while the sum is 39.

The square root of 68544642 is about 8279.1691612142. The cubic root of 68544642 is about 409.2523395851.

The spelling of 68544642 in words is "sixty-eight million, five hundred forty-four thousand, six hundred forty-two".