274288649 has 4 divisors (see below), whose sum is σ = 275931264. Its totient is φ = 272646036.

The previous prime is 274288633. The next prime is 274288661. The reversal of 274288649 is 946882472.

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 274288649 - 2⁴ = 274288633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 274288597 and 274288606.

It is not an unprimeable number, because it can be changed into a prime (274288249) 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, 821057 + ... + 821390.

It is an arithmetic number, because the mean of its divisors is an integer number (68982816).

Almost surely, 2^274288649 is an apocalyptic number.

It is an amenable number.

274288649 is a deficient number, since it is larger than the sum of its proper divisors (1642615).

274288649 is a wasteful number, since it uses less digits than its factorization.

274288649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642614.

The product of its digits is 1548288, while the sum is 50.

The square root of 274288649 is about 16561.6620240844. The cubic root of 274288649 is about 649.7345259089.

The spelling of 274288649 in words is "two hundred seventy-four million, two hundred eighty-eight thousand, six hundred forty-nine".