276806 has 4 divisors (see below), whose sum is σ = 415212. Its totient is φ = 138402.

The previous prime is 276781. The next prime is 276817. The reversal of 276806 is 608672.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

276806 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69200 + ... + 69203.

It is an arithmetic number, because the mean of its divisors is an integer number (103803).

2²⁷⁶⁸⁰⁶ is an apocalyptic number.

276806 is a deficient number, since it is larger than the sum of its proper divisors (138406).

276806 is a wasteful number, since it uses less digits than its factorization.

276806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138405.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 276806 is about 526.1235596321. The cubic root of 276806 is about 65.1716174908.

The spelling of 276806 in words is "two hundred seventy-six thousand, eight hundred six".