68143383 has 64 divisors (see below), whose sum is σ = 127872000. Its totient is φ = 34836480.

The previous prime is 68143351. The next prime is 68143391. The reversal of 68143383 is 38334186.

It is a happy number.

It is not a de Polignac number, because 68143383 - 2⁵ = 68143351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68143333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151543 + ... + 151991.

It is an arithmetic number, because the mean of its divisors is an integer number (1998000).

Almost surely, 2^68143383 is an apocalyptic number.

68143383 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

68143383 is a deficient number, since it is larger than the sum of its proper divisors (59728617).

68143383 is a wasteful number, since it uses less digits than its factorization.

68143383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 68143383 is about 8254.9005445251. The cubic root of 68143383 is about 408.4521911202.

The spelling of 68143383 in words is "sixty-eight million, one hundred forty-three thousand, three hundred eighty-three".