273663 has 12 divisors (see below), whose sum is σ = 425880. Its totient is φ = 168336.

The previous prime is 273653. The next prime is 273697. The reversal of 273663 is 366372.

It is not a de Polignac number, because 273663 - 2¹³ = 265471 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 13.

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 273663.

It is not an unprimeable number, because it can be changed into a prime (273613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1053 + ... + 1286.

It is an arithmetic number, because the mean of its divisors is an integer number (35490).

2²⁷³⁶⁶³ is an apocalyptic number.

273663 is a deficient number, since it is larger than the sum of its proper divisors (152217).

273663 is a wasteful number, since it uses less digits than its factorization.

273663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358 (or 2355 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 273663 is about 523.1280913887. The cubic root of 273663 is about 64.9240137694.

The spelling of 273663 in words is "two hundred seventy-three thousand, six hundred sixty-three".