275218864 has 20 divisors (see below), whose sum is σ = 533497104. Its totient is φ = 137542208.

The previous prime is 275218861. The next prime is 275218871. The reversal of 275218864 is 468812572.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 275218864.

It is not an unprimeable number, because it can be changed into a prime (275218861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53994 + ... + 58870.

Almost surely, 2^275218864 is an apocalyptic number.

It is an amenable number.

275218864 is a deficient number, since it is larger than the sum of its proper divisors (258278240).

275218864 is a wasteful number, since it uses less digits than its factorization.

275218864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8412 (or 8406 counting only the distinct ones).

The product of its digits is 215040, while the sum is 43.

The square root of 275218864 is about 16589.7216372066. The cubic root of 275218864 is about 650.4681944344.

The spelling of 275218864 in words is "two hundred seventy-five million, two hundred eighteen thousand, eight hundred sixty-four".