276742223 has 2 divisors, whose sum is σ = 276742224. Its totient is φ = 276742222.

The previous prime is 276742211. The next prime is 276742229. The reversal of 276742223 is 322247672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 276742223 - 2⁶ = 276742159 is a prime.

It is equal to p_15058475 and since 276742223 and 15058475 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (276742229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138371111 + 138371112.

It is an arithmetic number, because the mean of its divisors is an integer number (138371112).

Almost surely, 2^276742223 is an apocalyptic number.

276742223 is a deficient number, since it is larger than the sum of its proper divisors (1).

276742223 is an equidigital number, since it uses as much as digits as its factorization.

276742223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 35.

The square root of 276742223 is about 16635.5710151470. The cubic root of 276742223 is about 651.6661185565. Note that the first 3 decimals are identical.

Adding to 276742223 its reverse (322247672), we get a palindrome (598989895).

The spelling of 276742223 in words is "two hundred seventy-six million, seven hundred forty-two thousand, two hundred twenty-three".