275620889 has 2 divisors, whose sum is σ = 275620890. Its totient is φ = 275620888.

The previous prime is 275620871. The next prime is 275620909. The reversal of 275620889 is 988026572.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 258148489 + 17472400 = 16067^2 + 4180^2 .

It is a cyclic number.

It is not a de Polignac number, because 275620889 - 2²⁰ = 274572313 is a prime.

It is not a weakly prime, because it can be changed into another prime (275620489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137810444 + 137810445.

It is an arithmetic number, because the mean of its divisors is an integer number (137810445).

Almost surely, 2^275620889 is an apocalyptic number.

It is an amenable number.

275620889 is a deficient number, since it is larger than the sum of its proper divisors (1).

275620889 is an equidigital number, since it uses as much as digits as its factorization.

275620889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 275620889 is about 16601.8339047227. The cubic root of 275620889 is about 650.7847633942.

The spelling of 275620889 in words is "two hundred seventy-five million, six hundred twenty thousand, eight hundred eighty-nine".