68868144 has 60 divisors (see below), whose sum is σ = 199884776. Its totient is φ = 22954752.

The previous prime is 68868101. The next prime is 68868181. The reversal of 68868144 is 44186886.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 68868144.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4969 + ... + 12744.

Almost surely, 2^68868144 is an apocalyptic number.

It is an amenable number.

68868144 is an abundant number, since it is smaller than the sum of its proper divisors (131016632).

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

68868144 is a wasteful number, since it uses less digits than its factorization.

68868144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17736 (or 17718 counting only the distinct ones).

The product of its digits is 294912, while the sum is 45.

The square root of 68868144 is about 8298.6832690494. The cubic root of 68868144 is about 409.8951625666.

The spelling of 68868144 in words is "sixty-eight million, eight hundred sixty-eight thousand, one hundred forty-four".