276645349 has 2 divisors, whose sum is σ = 276645350. Its totient is φ = 276645348.

The previous prime is 276645329. The next prime is 276645361. The reversal of 276645349 is 943546672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269452225 + 7193124 = 16415^2 + 2682^2 .

It is a cyclic number.

It is not a de Polignac number, because 276645349 - 2⁷ = 276645221 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 276645299 and 276645308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276645329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138322674 + 138322675.

It is an arithmetic number, because the mean of its divisors is an integer number (138322675).

Almost surely, 2^276645349 is an apocalyptic number.

It is an amenable number.

276645349 is a deficient number, since it is larger than the sum of its proper divisors (1).

276645349 is an equidigital number, since it uses as much as digits as its factorization.

276645349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 46.

The square root of 276645349 is about 16632.6591079118. The cubic root of 276645349 is about 651.5900708053.

The spelling of 276645349 in words is "two hundred seventy-six million, six hundred forty-five thousand, three hundred forty-nine".