273645 has 16 divisors (see below), whose sum is σ = 486720. Its totient is φ = 145872.

The previous prime is 273643. The next prime is 273653. The reversal of 273645 is 546372.

273645 = 44³ + 45³ + 46³.

It is a happy number.

It is not a de Polignac number, because 273645 - 2¹ = 273643 is a prime.

It is a super-3 number, since 3×273645³ = 61472914823433375, which contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁹ + 7 + 6⁴ + 3⁸ + 4⁹ + 5⁵ .

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 273645.

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 15 ways as a sum of consecutive naturals, for example, 879 + ... + 1148.

It is an arithmetic number, because the mean of its divisors is an integer number (30420).

2²⁷³⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

273645 is a deficient number, since it is larger than the sum of its proper divisors (213075).

273645 is a wasteful number, since it uses less digits than its factorization.

273645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 2035 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 273645 is about 523.1108869064. The cubic root of 273645 is about 64.9225902937.

The spelling of 273645 in words is "two hundred seventy-three thousand, six hundred forty-five".