275120661 has 8 divisors (see below), whose sum is σ = 367680384. Its totient is φ = 182987360.

The previous prime is 275120653. The next prime is 275120663. The reversal of 275120661 is 166021572.

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

It is a cyclic number.

It is not a de Polignac number, because 275120661 - 2³ = 275120653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275120663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105096 + ... + 107681.

It is an arithmetic number, because the mean of its divisors is an integer number (45960048).

Almost surely, 2^275120661 is an apocalyptic number.

It is an amenable number.

275120661 is a deficient number, since it is larger than the sum of its proper divisors (92559723).

275120661 is a wasteful number, since it uses less digits than its factorization.

275120661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213211.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 275120661 is about 16586.7616188333. The cubic root of 275120661 is about 650.3908190125.

The spelling of 275120661 in words is "two hundred seventy-five million, one hundred twenty thousand, six hundred sixty-one".