68302656 has 168 divisors, whose sum is σ = 212384640. Its totient is φ = 21514752.

The previous prime is 68302603. The next prime is 68302657. The reversal of 68302656 is 65620386.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68302656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68302657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1453225 + ... + 1453271.

Almost surely, 2^68302656 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 68302656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106192320).

68302656 is an abundant number, since it is smaller than the sum of its proper divisors (144081984).

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

68302656 is a wasteful number, since it uses less digits than its factorization.

68302656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 68302656 is about 8264.5420925784. The cubic root of 68302656 is about 408.7701715489.

The spelling of 68302656 in words is "sixty-eight million, three hundred two thousand, six hundred fifty-six".