270989 has 4 divisors (see below), whose sum is σ = 276156. Its totient is φ = 265824.

The previous prime is 270973. The next prime is 271003. The reversal of 270989 is 989072.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75625 + 195364 = 275^2 + 442^2 .

It is a cyclic number.

It is not a de Polignac number, because 270989 - 2⁴ = 270973 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2504 + ... + 2609.

It is an arithmetic number, because the mean of its divisors is an integer number (69039).

2²⁷⁰⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

270989 is a deficient number, since it is larger than the sum of its proper divisors (5167).

270989 is an equidigital number, since it uses as much as digits as its factorization.

270989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5166.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 270989 is about 520.5660380778. The cubic root of 270989 is about 64.7118606857.

The spelling of 270989 in words is "two hundred seventy thousand, nine hundred eighty-nine".