276272765 has 4 divisors (see below), whose sum is σ = 331527324. Its totient is φ = 221018208.

The previous prime is 276272761. The next prime is 276272779. The reversal of 276272765 is 567272672.

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 76983076 + 199289689 = 8774^2 + 14117^2 .

It is a cyclic number.

It is not a de Polignac number, because 276272765 - 2² = 276272761 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276272761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27627272 + ... + 27627281.

It is an arithmetic number, because the mean of its divisors is an integer number (82881831).

Almost surely, 2^276272765 is an apocalyptic number.

It is an amenable number.

276272765 is a deficient number, since it is larger than the sum of its proper divisors (55254559).

276272765 is an equidigital number, since it uses as much as digits as its factorization.

276272765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55254558.

The product of its digits is 493920, while the sum is 44.

The square root of 276272765 is about 16621.4549603818. The cubic root of 276272765 is about 651.2974204194.

The spelling of 276272765 in words is "two hundred seventy-six million, two hundred seventy-two thousand, seven hundred sixty-five".