68397056 has 96 divisors (see below), whose sum is σ = 168779520. Its totient is φ = 26984448.

The previous prime is 68397031. The next prime is 68397059. The reversal of 68397056 is 65079386.

It is a junction number, because it is equal to n+sod(n) for n = 68396998 and 68397016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68397059) by changing a digit.

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, 186185 + ... + 186551.

It is an arithmetic number, because the mean of its divisors is an integer number (1758120).

Almost surely, 2^68397056 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 68397056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84389760).

68397056 is an abundant number, since it is smaller than the sum of its proper divisors (100382464).

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

68397056 is a wasteful number, since it uses less digits than its factorization.

68397056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 68397056 is about 8270.2512658323. The cubic root of 68397056 is about 408.9584030802.

The spelling of 68397056 in words is "sixty-eight million, three hundred ninety-seven thousand, fifty-six".