276081609 has 16 divisors (see below), whose sum is σ = 388585280. Its totient is φ = 174354336.

The previous prime is 276081599. The next prime is 276081667. The reversal of 276081609 is 906180672.

It is not a de Polignac number, because 276081609 - 2⁸ = 276081353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (276081809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13869 + ... + 27285.

It is an arithmetic number, because the mean of its divisors is an integer number (24286580).

Almost surely, 2^276081609 is an apocalyptic number.

It is an amenable number.

276081609 is a deficient number, since it is larger than the sum of its proper divisors (112503671).

276081609 is an equidigital number, since it uses as much as digits as its factorization.

276081609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13477 (or 13439 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 276081609 is about 16615.7036865731. The cubic root of 276081609 is about 651.1471726080.

The spelling of 276081609 in words is "two hundred seventy-six million, eighty-one thousand, six hundred nine".