68105344 has 32 divisors (see below), whose sum is σ = 136583100. Its totient is φ = 33825792.

The previous prime is 68105333. The next prime is 68105353. The reversal of 68105344 is 44350186.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65415744 + 2689600 = 8088^2 + 1640^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18402 + ... + 21790.

Almost surely, 2^68105344 is an apocalyptic number.

68105344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68105344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68291550).

68105344 is an abundant number, since it is smaller than the sum of its proper divisors (68477756).

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

68105344 is a wasteful number, since it uses less digits than its factorization.

68105344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560 (or 3548 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 68105344 is about 8252.5961975611. The cubic root of 68105344 is about 408.3761749117.

The spelling of 68105344 in words is "sixty-eight million, one hundred five thousand, three hundred forty-four".