274721 has 6 divisors (see below), whose sum is σ = 290322. Its totient is φ = 259920.

The previous prime is 274711. The next prime is 274723. The reversal of 274721 is 127472.

It can be written as a sum of positive squares in only one way, i.e., 144400 + 130321 = 380^2 + 361^2 .

It is not a de Polignac number, because 274721 - 2¹⁰ = 273697 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 274721.

It is not an unprimeable number, because it can be changed into a prime (274723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20 + ... + 741.

It is an arithmetic number, because the mean of its divisors is an integer number (48387).

2²⁷⁴⁷²¹ is an apocalyptic number.

It is an amenable number.

274721 is a deficient number, since it is larger than the sum of its proper divisors (15601).

274721 is an equidigital number, since it uses as much as digits as its factorization.

274721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 780 counting only the distinct ones).

The product of its digits is 784, while the sum is 23.

The square root of 274721 is about 524.1383405171. The cubic root of 274721 is about 65.0075730821.

The spelling of 274721 in words is "two hundred seventy-four thousand, seven hundred twenty-one", and thus it is an iban number.