126567769 has 2 divisors, whose sum is σ = 126567770. Its totient is φ = 126567768.

The previous prime is 126567767. The next prime is 126567773. The reversal of 126567769 is 967765621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121815369 + 4752400 = 11037^2 + 2180^2 .

It is a cyclic number.

It is not a de Polignac number, because 126567769 - 2¹ = 126567767 is a prime.

It is a super-2 number, since 2×126567769² = 32038800299274722, which contains 22 as substring.

Together with 126567767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126567767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63283884 + 63283885.

It is an arithmetic number, because the mean of its divisors is an integer number (63283885).

Almost surely, 2^126567769 is an apocalyptic number.

It is an amenable number.

126567769 is a deficient number, since it is larger than the sum of its proper divisors (1).

126567769 is an equidigital number, since it uses as much as digits as its factorization.

126567769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 49.

The square root of 126567769 is about 11250.2341753405. The cubic root of 126567769 is about 502.0816798570.

The spelling of 126567769 in words is "one hundred twenty-six million, five hundred sixty-seven thousand, seven hundred sixty-nine".