274768643 has 2 divisors, whose sum is σ = 274768644. Its totient is φ = 274768642.

The previous prime is 274768619. The next prime is 274768673. The reversal of 274768643 is 346867472.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 274768643 - 2⁶ = 274768579 is a prime.

It is a super-2 number, since 2×274768643² = 150995614352122898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (274768673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137384321 + 137384322.

It is an arithmetic number, because the mean of its divisors is an integer number (137384322).

Almost surely, 2^274768643 is an apocalyptic number.

274768643 is a deficient number, since it is larger than the sum of its proper divisors (1).

274768643 is an equidigital number, since it uses as much as digits as its factorization.

274768643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 47.

The square root of 274768643 is about 16576.1468079889. The cubic root of 274768643 is about 650.1133080576.

The spelling of 274768643 in words is "two hundred seventy-four million, seven hundred sixty-eight thousand, six hundred forty-three".