276506869 has 2 divisors, whose sum is σ = 276506870. Its totient is φ = 276506868.

The previous prime is 276506861. The next prime is 276506917. The reversal of 276506869 is 968605672.

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., 223143844 + 53363025 = 14938^2 + 7305^2 .

It is a cyclic number.

It is not a de Polignac number, because 276506869 - 2³ = 276506861 is a prime.

It is a super-2 number, since 2×276506869² = 152912097208366322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276506861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138253434 + 138253435.

It is an arithmetic number, because the mean of its divisors is an integer number (138253435).

Almost surely, 2^276506869 is an apocalyptic number.

It is an amenable number.

276506869 is a deficient number, since it is larger than the sum of its proper divisors (1).

276506869 is an equidigital number, since it uses as much as digits as its factorization.

276506869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 276506869 is about 16628.4956926356. The cubic root of 276506869 is about 651.4813307966.

The spelling of 276506869 in words is "two hundred seventy-six million, five hundred six thousand, eight hundred sixty-nine".