276742369 has 2 divisors, whose sum is σ = 276742370. Its totient is φ = 276742368.

The previous prime is 276742327. The next prime is 276742373. The reversal of 276742369 is 963247672.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 61826769 = 14660^2 + 7863^2 .

It is a cyclic number.

It is not a de Polignac number, because 276742369 - 2²⁵ = 243187937 is a prime.

It is a super-2 number, since 2×276742369² = 153172677599464322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (276742379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138371184 + 138371185.

It is an arithmetic number, because the mean of its divisors is an integer number (138371185).

Almost surely, 2^276742369 is an apocalyptic number.

It is an amenable number.

276742369 is a deficient number, since it is larger than the sum of its proper divisors (1).

276742369 is an equidigital number, since it uses as much as digits as its factorization.

276742369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 46.

The square root of 276742369 is about 16635.5754033337. The cubic root of 276742369 is about 651.6662331556. Note that the first 3 decimals are identical.

The spelling of 276742369 in words is "two hundred seventy-six million, seven hundred forty-two thousand, three hundred sixty-nine".