68864208 has 240 divisors, whose sum is σ = 230699520. Its totient is φ = 17563392.

The previous prime is 68864197. The next prime is 68864209. The reversal of 68864208 is 80246886.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 68864208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68864209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1027791 + ... + 1027857.

It is an arithmetic number, because the mean of its divisors is an integer number (961248).

Almost surely, 2^68864208 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 68864208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115349760).

68864208 is an abundant number, since it is smaller than the sum of its proper divisors (161835312).

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

68864208 is a wasteful number, since it uses less digits than its factorization.

68864208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 68864208 is about 8298.4461196058. The cubic root of 68864208 is about 409.8873535469.

The spelling of 68864208 in words is "sixty-eight million, eight hundred sixty-four thousand, two hundred eight".