75628769 has 2 divisors, whose sum is σ = 75628770. Its totient is φ = 75628768.

The previous prime is 75628717. The next prime is 75628793. The reversal of 75628769 is 96782657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73702225 + 1926544 = 8585^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 75628769 - 2⁸ = 75628513 is a prime.

It is a super-2 number, since 2×75628769² = 11439421400910722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (75628799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37814384 + 37814385.

It is an arithmetic number, because the mean of its divisors is an integer number (37814385).

Almost surely, 2^75628769 is an apocalyptic number.

It is an amenable number.

75628769 is a deficient number, since it is larger than the sum of its proper divisors (1).

75628769 is an equidigital number, since it uses as much as digits as its factorization.

75628769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 75628769 is about 8696.4802650268. The cubic root of 75628769 is about 422.8915530311.

The spelling of 75628769 in words is "seventy-five million, six hundred twenty-eight thousand, seven hundred sixty-nine".