276730681 has 2 divisors, whose sum is σ = 276730682. Its totient is φ = 276730680.

The previous prime is 276730679. The next prime is 276730711. The reversal of 276730681 is 186037672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239630400 + 37100281 = 15480^2 + 6091^2 .

It is a cyclic number.

It is not a de Polignac number, because 276730681 - 2¹ = 276730679 is a prime.

It is a super-2 number, since 2×276730681² = 153159739613447522, which contains 22 as substring.

Together with 276730679, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (276730631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138365340 + 138365341.

It is an arithmetic number, because the mean of its divisors is an integer number (138365341).

Almost surely, 2^276730681 is an apocalyptic number.

It is an amenable number.

276730681 is a deficient number, since it is larger than the sum of its proper divisors (1).

276730681 is an equidigital number, since it uses as much as digits as its factorization.

276730681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 276730681 is about 16635.2241042915. The cubic root of 276730681 is about 651.6570588200.

The spelling of 276730681 in words is "two hundred seventy-six million, seven hundred thirty thousand, six hundred eighty-one".