275320665 has 12 divisors (see below), whose sum is σ = 477222564. Its totient is φ = 146837664.

The previous prime is 275320631. The next prime is 275320687. The reversal of 275320665 is 566023572.

It is a happy number.

275320665 is a `hidden beast` number, since 275 + 320 + 6 + 65 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62394201 + 212926464 = 7899^2 + 14592^2 .

It is not a de Polignac number, because 275320665 - 2⁶ = 275320601 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3059074 + ... + 3059163.

It is an arithmetic number, because the mean of its divisors is an integer number (39768547).

Almost surely, 2^275320665 is an apocalyptic number.

It is an amenable number.

275320665 is a deficient number, since it is larger than the sum of its proper divisors (201901899).

275320665 is a wasteful number, since it uses less digits than its factorization.

275320665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6118248 (or 6118245 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The square root of 275320665 is about 16592.7895484756. The cubic root of 275320665 is about 650.5483853400.

The spelling of 275320665 in words is "two hundred seventy-five million, three hundred twenty thousand, six hundred sixty-five".