276641 has 4 divisors (see below), whose sum is σ = 292932. Its totient is φ = 260352.

The previous prime is 276637. The next prime is 276671. The reversal of 276641 is 146672.

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 246016 + 30625 = 496^2 + 175^2 .

It is a cyclic number.

It is not a de Polignac number, because 276641 - 2² = 276637 is a prime.

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 276641.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 276641.

It is not an unprimeable number, because it can be changed into a prime (276671) 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, 8120 + ... + 8153.

It is an arithmetic number, because the mean of its divisors is an integer number (73233).

2²⁷⁶⁶⁴¹ is an apocalyptic number.

It is an amenable number.

276641 is a deficient number, since it is larger than the sum of its proper divisors (16291).

276641 is a wasteful number, since it uses less digits than its factorization.

276641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16290.

The product of its digits is 2016, while the sum is 26.

The square root of 276641 is about 525.9667289858. The cubic root of 276641 is about 65.1586656349.

Subtracting from 276641 its product of digits (2016), we obtain a cube (274625 = 65³).

The spelling of 276641 in words is "two hundred seventy-six thousand, six hundred forty-one".