276530069 has 2 divisors, whose sum is σ = 276530070. Its totient is φ = 276530068.

The previous prime is 276530039. The next prime is 276530083. The reversal of 276530069 is 960035672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271821169 + 4708900 = 16487^2 + 2170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-276530069 is a prime.

It is a super-2 number, since 2×276530069² = 152937758122289522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276530039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138265034 + 138265035.

It is an arithmetic number, because the mean of its divisors is an integer number (138265035).

Almost surely, 2^276530069 is an apocalyptic number.

It is an amenable number.

276530069 is a deficient number, since it is larger than the sum of its proper divisors (1).

276530069 is an equidigital number, since it uses as much as digits as its factorization.

276530069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 276530069 is about 16629.1932756824. The cubic root of 276530069 is about 651.4995508915.

The spelling of 276530069 in words is "two hundred seventy-six million, five hundred thirty thousand, sixty-nine".