275745665 has 8 divisors (see below), whose sum is σ = 356348328. Its totient is φ = 203627520.

The previous prime is 275745653. The next prime is 275745667. The reversal of 275745665 is 566547572.

It can be written as a sum of positive squares in 4 ways, for example, as 12559936 + 263185729 = 3544^2 + 16223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 275745665 - 2¹² = 275741569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (275745667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121056 + ... + 2121185.

It is an arithmetic number, because the mean of its divisors is an integer number (44543541).

Almost surely, 2^275745665 is an apocalyptic number.

It is an amenable number.

275745665 is a deficient number, since it is larger than the sum of its proper divisors (80602663).

275745665 is a wasteful number, since it uses less digits than its factorization.

275745665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4242259.

The product of its digits is 1764000, while the sum is 47.

The square root of 275745665 is about 16605.5913776053. The cubic root of 275745665 is about 650.8829539068.

The spelling of 275745665 in words is "two hundred seventy-five million, seven hundred forty-five thousand, six hundred sixty-five".