68137075 has 24 divisors (see below), whose sum is σ = 87280128. Its totient is φ = 52738080.

The previous prime is 68137073. The next prime is 68137093. The reversal of 68137075 is 57073186.

It is not a de Polignac number, because 68137075 - 2¹ = 68137073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68137073) 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 23 ways as a sum of consecutive naturals, for example, 120744 + ... + 121306.

It is an arithmetic number, because the mean of its divisors is an integer number (3636672).

Almost surely, 2^68137075 is an apocalyptic number.

68137075 is a deficient number, since it is larger than the sum of its proper divisors (19143053).

68137075 is a wasteful number, since it uses less digits than its factorization.

68137075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 68137075 is about 8254.5184596074. The cubic root of 68137075 is about 408.4395873241.

The spelling of 68137075 in words is "sixty-eight million, one hundred thirty-seven thousand, seventy-five".