274673221 has 2 divisors, whose sum is σ = 274673222. Its totient is φ = 274673220.

The previous prime is 274673219. The next prime is 274673263. The reversal of 274673221 is 122376472.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214300321 + 60372900 = 14639^2 + 7770^2 .

It is a cyclic number.

It is not a de Polignac number, because 274673221 - 2¹ = 274673219 is a prime.

Together with 274673219, 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 (274673921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137336610 + 137336611.

It is an arithmetic number, because the mean of its divisors is an integer number (137336611).

Almost surely, 2^274673221 is an apocalyptic number.

It is an amenable number.

274673221 is a deficient number, since it is larger than the sum of its proper divisors (1).

274673221 is an equidigital number, since it uses as much as digits as its factorization.

274673221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 34.

The square root of 274673221 is about 16573.2682654931. The cubic root of 274673221 is about 650.0380419550.

The spelling of 274673221 in words is "two hundred seventy-four million, six hundred seventy-three thousand, two hundred twenty-one".