68944161 has 16 divisors (see below), whose sum is σ = 107997120. Its totient is φ = 38569920.

The previous prime is 68944157. The next prime is 68944181. The reversal of 68944161 is 16144986.

It is not a de Polignac number, because 68944161 - 2² = 68944157 is a prime.

It is a super-3 number, since 3×68944161³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (68944181) 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 15 ways as a sum of consecutive naturals, for example, 79926 + ... + 80783.

It is an arithmetic number, because the mean of its divisors is an integer number (6749820).

Almost surely, 2^68944161 is an apocalyptic number.

It is an amenable number.

68944161 is a deficient number, since it is larger than the sum of its proper divisors (39052959).

68944161 is a wasteful number, since it uses less digits than its factorization.

68944161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160736.

The product of its digits is 41472, while the sum is 39.

The square root of 68944161 is about 8303.2620698133. The cubic root of 68944161 is about 410.0459218839.

It can be divided in two parts, 689 and 44161, that added together give a triangular number (44850 = T₂₉₉).

The spelling of 68944161 in words is "sixty-eight million, nine hundred forty-four thousand, one hundred sixty-one".