68710656 has 72 divisors (see below), whose sum is σ = 209011264. Its totient is φ = 19630080.

The previous prime is 68710643. The next prime is 68710661. The reversal of 68710656 is 65601786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015 + ... + 11766.

Almost surely, 2^68710656 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 68710656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104505632).

68710656 is an abundant number, since it is smaller than the sum of its proper divisors (140300608).

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

68710656 is a wasteful number, since it uses less digits than its factorization.

68710656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12807 (or 12793 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 68710656 is about 8289.1891038871. The cubic root of 68710656 is about 409.5824740222.

The spelling of 68710656 in words is "sixty-eight million, seven hundred ten thousand, six hundred fifty-six".