276889 has 4 divisors (see below), whose sum is σ = 280756. Its totient is φ = 273024.

The previous prime is 276883. The next prime is 276901. The reversal of 276889 is 988672.

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 100489 + 176400 = 317^2 + 420^2 .

It is a cyclic number.

It is not a de Polignac number, because 276889 - 2¹⁵ = 244121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824 + ... + 1969.

It is an arithmetic number, because the mean of its divisors is an integer number (70189).

2²⁷⁶⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

276889 is a deficient number, since it is larger than the sum of its proper divisors (3867).

276889 is an equidigital number, since it uses as much as digits as its factorization.

276889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866.

The product of its digits is 48384, while the sum is 40.

The square root of 276889 is about 526.2024325295. The cubic root of 276889 is about 65.1781307211.

The spelling of 276889 in words is "two hundred seventy-six thousand, eight hundred eighty-nine".