68115456 has 132 divisors (see below), whose sum is σ = 207565800. Its totient is φ = 21454848.

The previous prime is 68115449. The next prime is 68115457. The reversal of 68115456 is 65451186.

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 68115456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68115457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 174910 + ... + 175298.

Almost surely, 2^68115456 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 68115456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103782900).

68115456 is an abundant number, since it is smaller than the sum of its proper divisors (139450344).

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

68115456 is a wasteful number, since it uses less digits than its factorization.

68115456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 413 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 68115456 is about 8253.2088305095. The cubic root of 68115456 is about 408.3963852470.

The spelling of 68115456 in words is "sixty-eight million, one hundred fifteen thousand, four hundred fifty-six".