274266721 has 3 divisors (see below), whose sum is σ = 274283283. Its totient is φ = 274250160.

The previous prime is 274266719. The next prime is 274266737. The reversal of 274266721 is 127662472.

The square root of 274266721 is 16561.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 262440000 = 3439^2 + 16200^2 .

It is not a de Polignac number, because 274266721 - 2¹ = 274266719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (274266791) 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 in 2 ways as a sum of consecutive naturals, for example, 8281 + ... + 24841.

It is an arithmetic number, because the mean of its divisors is an integer number (91427761).

Almost surely, 2^274266721 is an apocalyptic number.

274266721 is the 16561-st square number.

274266721 is the 8281-st centered octagonal number.

It is an amenable number.

274266721 is a deficient number, since it is larger than the sum of its proper divisors (16562).

274266721 is an frugal number, since it uses more digits than its factorization.

274266721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33122 (or 16561 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The cubic root of 274266721 is about 649.7172111100.

The spelling of 274266721 in words is "two hundred seventy-four million, two hundred sixty-six thousand, seven hundred twenty-one".