274730639 has 2 divisors, whose sum is σ = 274730640. Its totient is φ = 274730638.

The previous prime is 274730623. The next prime is 274730647. The reversal of 274730639 is 936037472.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 274730639 - 2⁴ = 274730623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 274730596 and 274730605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274730039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137365319 + 137365320.

It is an arithmetic number, because the mean of its divisors is an integer number (137365320).

Almost surely, 2^274730639 is an apocalyptic number.

274730639 is a deficient number, since it is larger than the sum of its proper divisors (1).

274730639 is an equidigital number, since it uses as much as digits as its factorization.

274730639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 274730639 is about 16575.0004223228. Note that the first 3 decimals coincide. The cubic root of 274730639 is about 650.0833336944.

The spelling of 274730639 in words is "two hundred seventy-four million, seven hundred thirty thousand, six hundred thirty-nine".