68075136 has 48 divisors (see below), whose sum is σ = 195896610. Its totient is φ = 22691328.

The previous prime is 68075131. The next prime is 68075143. The reversal of 68075136 is 63157086.

It can be written as a sum of positive squares in only one way, i.e., 40449600 + 27625536 = 6360^2 + 5256^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68075136.

It is not an unprimeable number, because it can be changed into a prime (68075131) 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 5 ways as a sum of consecutive naturals, for example, 28395 + ... + 30698.

Almost surely, 2^68075136 is an apocalyptic number.

It is an amenable number.

68075136 is an abundant number, since it is smaller than the sum of its proper divisors (127821474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68075136 is a wasteful number, since it uses less digits than its factorization.

68075136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59113 (or 59098 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 68075136 is about 8250.7657826410. The cubic root of 68075136 is about 408.3157878157.

The spelling of 68075136 in words is "sixty-eight million, seventy-five thousand, one hundred thirty-six".