68388429 has 16 divisors (see below), whose sum is σ = 96192000. Its totient is φ = 43099056.

The previous prime is 68388427. The next prime is 68388473. The reversal of 68388429 is 92488386.

It is a happy number.

It is not a de Polignac number, because 68388429 - 2¹ = 68388427 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68388427) 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, 33142 + ... + 35144.

It is an arithmetic number, because the mean of its divisors is an integer number (6012000).

Almost surely, 2^68388429 is an apocalyptic number.

It is an amenable number.

68388429 is a deficient number, since it is larger than the sum of its proper divisors (27803571).

68388429 is a wasteful number, since it uses less digits than its factorization.

68388429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624.

The product of its digits is 663552, while the sum is 48.

The square root of 68388429 is about 8269.7296811927. The cubic root of 68388429 is about 408.9412082247.

The spelling of 68388429 in words is "sixty-eight million, three hundred eighty-eight thousand, four hundred twenty-nine".