274635643 has 2 divisors, whose sum is σ = 274635644. Its totient is φ = 274635642.

The previous prime is 274635623. The next prime is 274635649. The reversal of 274635643 is 346536472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 274635643 - 2⁵ = 274635611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 274635596 and 274635605.

It is not a weakly prime, because it can be changed into another prime (274635649) 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, 137317821 + 137317822.

It is an arithmetic number, because the mean of its divisors is an integer number (137317822).

Almost surely, 2^274635643 is an apocalyptic number.

274635643 is a deficient number, since it is larger than the sum of its proper divisors (1).

274635643 is an equidigital number, since it uses as much as digits as its factorization.

274635643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 40.

The square root of 274635643 is about 16572.1345336079. The cubic root of 274635643 is about 650.0083967357.

The spelling of 274635643 in words is "two hundred seventy-four million, six hundred thirty-five thousand, six hundred forty-three".