68308944 has 80 divisors (see below), whose sum is σ = 196219584. Its totient is φ = 20300800.

The previous prime is 68308943. The next prime is 68308951. The reversal of 68308944 is 44980386.

It is a super-2 number, since 2×68308944² = 9332223660790272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68308896 and 68308905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68308943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26764 + ... + 29204.

Almost surely, 2^68308944 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 68308944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98109792).

68308944 is an abundant number, since it is smaller than the sum of its proper divisors (127910640).

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

68308944 is a wasteful number, since it uses less digits than its factorization.

68308944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 2510 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 68308944 is about 8264.9225041739. The cubic root of 68308944 is about 408.7827150727.

The spelling of 68308944 in words is "sixty-eight million, three hundred eight thousand, nine hundred forty-four".