273665 has 12 divisors (see below), whose sum is σ = 382356. Its totient is φ = 187488.

The previous prime is 273653. The next prime is 273697. The reversal of 273665 is 566372.

It can be written as a sum of positive squares in 2 ways, for example, as 47089 + 226576 = 217^2 + 476^2 .

It is not a de Polignac number, because 273665 - 2⁶ = 273601 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 2⁵ + 7² + 6⁶ + 3¹¹ + 6⁶ + 5⁵ .

It is a Duffinian number.

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314 + ... + 803.

It is an arithmetic number, because the mean of its divisors is an integer number (31863).

2²⁷³⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

273665 is a deficient number, since it is larger than the sum of its proper divisors (108691).

273665 is a wasteful number, since it uses less digits than its factorization.

273665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136 (or 1129 counting only the distinct ones).

The product of its digits is 7560, while the sum is 29.

The square root of 273665 is about 523.1300029629. The cubic root of 273665 is about 64.9241719295.

The spelling of 273665 in words is "two hundred seventy-three thousand, six hundred sixty-five".