276805693 has 2 divisors, whose sum is σ = 276805694. Its totient is φ = 276805692.

The previous prime is 276805691. The next prime is 276805703. The reversal of 276805693 is 396508672.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143472484 + 133333209 = 11978^2 + 11547^2 .

It is a cyclic number.

It is not a de Polignac number, because 276805693 - 2¹ = 276805691 is a prime.

Together with 276805691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276805691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138402846 + 138402847.

It is an arithmetic number, because the mean of its divisors is an integer number (138402847).

Almost surely, 2^276805693 is an apocalyptic number.

It is an amenable number.

276805693 is a deficient number, since it is larger than the sum of its proper divisors (1).

276805693 is an equidigital number, since it uses as much as digits as its factorization.

276805693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 276805693 is about 16637.4785649749. The cubic root of 276805693 is about 651.7159339726.

The spelling of 276805693 in words is "two hundred seventy-six million, eight hundred five thousand, six hundred ninety-three".