276755681 has 2 divisors, whose sum is σ = 276755682. Its totient is φ = 276755680.

The previous prime is 276755663. The next prime is 276755701. The reversal of 276755681 is 186557672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 276091456 + 664225 = 16616^2 + 815^2 .

It is a cyclic number.

It is not a de Polignac number, because 276755681 - 2¹⁰ = 276754657 is a prime.

It is a super-2 number, since 2×276755681² = 153187413931547522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (276755641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138377840 + 138377841.

It is an arithmetic number, because the mean of its divisors is an integer number (138377841).

Almost surely, 2^276755681 is an apocalyptic number.

It is an amenable number.

276755681 is a deficient number, since it is larger than the sum of its proper divisors (1).

276755681 is an equidigital number, since it uses as much as digits as its factorization.

276755681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 47.

The square root of 276755681 is about 16635.9755049110. The cubic root of 276755681 is about 651.6766819132.

The spelling of 276755681 in words is "two hundred seventy-six million, seven hundred fifty-five thousand, six hundred eighty-one".