68047616 has 144 divisors (see below), whose sum is σ = 175816704. Its totient is φ = 25546752.

The previous prime is 68047571. The next prime is 68047619. The reversal of 68047616 is 61674086.

It is a self number, because there is not a number n which added to its sum of digits gives 68047616.

It is not an unprimeable number, because it can be changed into a prime (68047619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535745 + ... + 535871.

Almost surely, 2^68047616 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 68047616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87908352).

68047616 is an abundant number, since it is smaller than the sum of its proper divisors (107769088).

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

68047616 is a wasteful number, since it uses less digits than its factorization.

68047616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 68047616 is about 8249.0978900726. The cubic root of 68047616 is about 408.2607585951.

The spelling of 68047616 in words is "sixty-eight million, forty-seven thousand, six hundred sixteen".