274379681 has 2 divisors, whose sum is σ = 274379682. Its totient is φ = 274379680.

The previous prime is 274379669. The next prime is 274379683. The reversal of 274379681 is 186973472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245392225 + 28987456 = 15665^2 + 5384^2 .

It is a cyclic number.

It is not a de Polignac number, because 274379681 - 2⁶ = 274379617 is a prime.

It is a super-2 number, since 2×274379681² = 150568418691323522, which contains 22 as substring.

Together with 274379683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (274379683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137189840 + 137189841.

It is an arithmetic number, because the mean of its divisors is an integer number (137189841).

Almost surely, 2^274379681 is an apocalyptic number.

It is an amenable number.

274379681 is a deficient number, since it is larger than the sum of its proper divisors (1).

274379681 is an equidigital number, since it uses as much as digits as its factorization.

274379681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The square root of 274379681 is about 16564.4100709926. The cubic root of 274379681 is about 649.8063967787.

The spelling of 274379681 in words is "two hundred seventy-four million, three hundred seventy-nine thousand, six hundred eighty-one".