272689 has 4 divisors (see below), whose sum is σ = 273780. Its totient is φ = 271600.

The previous prime is 272683. The next prime is 272693. The reversal of 272689 is 986272.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 153664 + 119025 = 392^2 + 345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-272689 is a prime.

It is a Duffinian number.

272689 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39 + ... + 739.

It is an arithmetic number, because the mean of its divisors is an integer number (68445).

2²⁷²⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

272689 is a deficient number, since it is larger than the sum of its proper divisors (1091).

272689 is an equidigital number, since it uses as much as digits as its factorization.

272689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090.

The product of its digits is 12096, while the sum is 34.

The square root of 272689 is about 522.1963232349. The cubic root of 272689 is about 64.8468980472.

It can be divided in two parts, 272 and 689, that added together give a square (961 = 31²).

The spelling of 272689 in words is "two hundred seventy-two thousand, six hundred eighty-nine".