273649 has 4 divisors (see below), whose sum is σ = 289764. Its totient is φ = 257536.

The previous prime is 273643. The next prime is 273653. The reversal of 273649 is 946372.

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

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 87025 = 432^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 273649 - 2³ = 273641 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 273649.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273641) 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, 8032 + ... + 8065.

It is an arithmetic number, because the mean of its divisors is an integer number (72441).

2²⁷³⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

273649 is a deficient number, since it is larger than the sum of its proper divisors (16115).

273649 is a wasteful number, since it uses less digits than its factorization.

273649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16114.

The product of its digits is 9072, while the sum is 31.

The square root of 273649 is about 523.1147101736. The cubic root of 273649 is about 64.9229066270.

The spelling of 273649 in words is "two hundred seventy-three thousand, six hundred forty-nine".