274720649 has 4 divisors (see below), whose sum is σ = 313966464. Its totient is φ = 235474836.

The previous prime is 274720643. The next prime is 274720651. The reversal of 274720649 is 946027472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 274720649 - 2²⁰ = 273672073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (274720643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19622897 + ... + 19622910.

It is an arithmetic number, because the mean of its divisors is an integer number (78491616).

Almost surely, 2^274720649 is an apocalyptic number.

It is an amenable number.

274720649 is a deficient number, since it is larger than the sum of its proper divisors (39245815).

274720649 is an equidigital number, since it uses as much as digits as its factorization.

274720649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39245814.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 274720649 is about 16574.6990621248. The cubic root of 274720649 is about 650.0754539626.

The spelling of 274720649 in words is "two hundred seventy-four million, seven hundred twenty thousand, six hundred forty-nine".