68218208 has 96 divisors (see below), whose sum is σ = 151048800. Its totient is φ = 30191616.

The previous prime is 68218187. The next prime is 68218211. The reversal of 68218208 is 80281286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934460 + ... + 934532.

It is an arithmetic number, because the mean of its divisors is an integer number (1573425).

Almost surely, 2^68218208 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 68218208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75524400).

68218208 is an abundant number, since it is smaller than the sum of its proper divisors (82830592).

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

68218208 is a wasteful number, since it uses less digits than its factorization.

68218208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 68218208 is about 8259.4314574310. The cubic root of 68218208 is about 408.6016370595.

The spelling of 68218208 in words is "sixty-eight million, two hundred eighteen thousand, two hundred eight".