75775769 has 2 divisors, whose sum is σ = 75775770. Its totient is φ = 75775768.

The previous prime is 75775759. The next prime is 75775789. The reversal of 75775769 is 96757757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 1471369 = 8620^2 + 1213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75775769 is a prime.

It is a super-2 number, since 2×75775769² = 11483934335082722, 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 75775769.

It is not a weakly prime, because it can be changed into another prime (75775709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37887884 + 37887885.

It is an arithmetic number, because the mean of its divisors is an integer number (37887885).

Almost surely, 2^75775769 is an apocalyptic number.

It is an amenable number.

75775769 is a deficient number, since it is larger than the sum of its proper divisors (1).

75775769 is an equidigital number, since it uses as much as digits as its factorization.

75775769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3241350, while the sum is 53.

The square root of 75775769 is about 8704.9278572542. The cubic root of 75775769 is about 423.1653678140.

The spelling of 75775769 in words is "seventy-five million, seven hundred seventy-five thousand, seven hundred sixty-nine".