68753139 has 16 divisors (see below), whose sum is σ = 112826112. Its totient is φ = 36265248.

The previous prime is 68753099. The next prime is 68753143. The reversal of 68753139 is 93135786.

It is not a de Polignac number, because 68753139 - 2⁸ = 68752883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68753139.

It is not an unprimeable number, because it can be changed into a prime (68753239) 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 15 ways as a sum of consecutive naturals, for example, 125649 + ... + 126194.

It is an arithmetic number, because the mean of its divisors is an integer number (7051632).

Almost surely, 2^68753139 is an apocalyptic number.

68753139 is a deficient number, since it is larger than the sum of its proper divisors (44072973).

68753139 is a wasteful number, since it uses less digits than its factorization.

68753139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251866.

The product of its digits is 136080, while the sum is 42.

The square root of 68753139 is about 8291.7512625500. The cubic root of 68753139 is about 409.6668699920. Note that the first 3 decimals are identical.

The spelling of 68753139 in words is "sixty-eight million, seven hundred fifty-three thousand, one hundred thirty-nine".