270643 has 4 divisors (see below), whose sum is σ = 272008. Its totient is φ = 269280.

The previous prime is 270631. The next prime is 270653. The reversal of 270643 is 346072.

270643 is nontrivially palindromic in base 7.

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

It is a cyclic number.

It is not a de Polignac number, because 270643 - 2⁹ = 270131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (270653) 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, 321 + ... + 802.

It is an arithmetic number, because the mean of its divisors is an integer number (68002).

2²⁷⁰⁶⁴³ is an apocalyptic number.

270643 is a deficient number, since it is larger than the sum of its proper divisors (1365).

270643 is a wasteful number, since it uses less digits than its factorization.

270643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 270643 is about 520.2336013754. The cubic root of 270643 is about 64.6843074887.

The spelling of 270643 in words is "two hundred seventy thousand, six hundred forty-three".