276005729 has 2 divisors, whose sum is σ = 276005730. Its totient is φ = 276005728.

The previous prime is 276005699. The next prime is 276005747. The reversal of 276005729 is 927500672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205865104 + 70140625 = 14348^2 + 8375^2 .

It is a cyclic number.

It is not a de Polignac number, because 276005729 - 2²⁴ = 259228513 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 276005692 and 276005701.

It is not a weakly prime, because it can be changed into another prime (276005749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138002864 + 138002865.

It is an arithmetic number, because the mean of its divisors is an integer number (138002865).

Almost surely, 2^276005729 is an apocalyptic number.

It is an amenable number.

276005729 is a deficient number, since it is larger than the sum of its proper divisors (1).

276005729 is an equidigital number, since it uses as much as digits as its factorization.

276005729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 276005729 is about 16613.4201475795. The cubic root of 276005729 is about 651.0875120183.

The spelling of 276005729 in words is "two hundred seventy-six million, five thousand, seven hundred twenty-nine".