274749647 has 4 divisors (see below), whose sum is σ = 278850456. Its totient is φ = 270648840.

The previous prime is 274749637. The next prime is 274749653. The reversal of 274749647 is 746947472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 274749647 - 2⁶ = 274749583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 274749595 and 274749604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (274749637) 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, 2050304 + ... + 2050437.

It is an arithmetic number, because the mean of its divisors is an integer number (69712614).

Almost surely, 2^274749647 is an apocalyptic number.

274749647 is a deficient number, since it is larger than the sum of its proper divisors (4100809).

274749647 is an equidigital number, since it uses as much as digits as its factorization.

274749647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4100808.

The product of its digits is 2370816, while the sum is 50.

The square root of 274749647 is about 16575.5738060557. The cubic root of 274749647 is about 650.0983259538.

The spelling of 274749647 in words is "two hundred seventy-four million, seven hundred forty-nine thousand, six hundred forty-seven".