68752757 has 2 divisors, whose sum is σ = 68752758. Its totient is φ = 68752756.

The previous prime is 68752753. The next prime is 68752769. The reversal of 68752757 is 75725786.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40119556 + 28633201 = 6334^2 + 5351^2 .

It is a cyclic number.

It is not a de Polignac number, because 68752757 - 2² = 68752753 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68752753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34376378 + 34376379.

It is an arithmetic number, because the mean of its divisors is an integer number (34376379).

Almost surely, 2^68752757 is an apocalyptic number.

It is an amenable number.

68752757 is a deficient number, since it is larger than the sum of its proper divisors (1).

68752757 is an equidigital number, since it uses as much as digits as its factorization.

68752757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823200, while the sum is 47.

The square root of 68752757 is about 8291.7282275772. The cubic root of 68752757 is about 409.6661112726. Note that the first 3 decimals are identical.

The spelling of 68752757 in words is "sixty-eight million, seven hundred fifty-two thousand, seven hundred fifty-seven".