75568769 has 2 divisors, whose sum is σ = 75568770. Its totient is φ = 75568768.

The previous prime is 75568733. The next prime is 75568799. The reversal of 75568769 is 96786557.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72471169 + 3097600 = 8513^2 + 1760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75568769 is a prime.

It is a super-2 number, since 2×75568769² = 11421277696350722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75568769.

It is not a weakly prime, because it can be changed into another prime (75568709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37784384 + 37784385.

It is an arithmetic number, because the mean of its divisors is an integer number (37784385).

Almost surely, 2^75568769 is an apocalyptic number.

It is an amenable number.

75568769 is a deficient number, since it is larger than the sum of its proper divisors (1).

75568769 is an equidigital number, since it uses as much as digits as its factorization.

75568769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 53.

The square root of 75568769 is about 8693.0299090708. The cubic root of 75568769 is about 422.7796899289.

The spelling of 75568769 in words is "seventy-five million, five hundred sixty-eight thousand, seven hundred sixty-nine".