288643 has 4 divisors (see below), whose sum is σ = 305640. Its totient is φ = 271648.

The previous prime is 288583. The next prime is 288647. The reversal of 288643 is 346882.

It is a happy number.

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 288643 - 2¹³ = 280451 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 8 + 6⁷ + 8 + 4⁴ + 3⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8473 + ... + 8506.

It is an arithmetic number, because the mean of its divisors is an integer number (76410).

2²⁸⁸⁶⁴³ is an apocalyptic number.

288643 is a deficient number, since it is larger than the sum of its proper divisors (16997).

288643 is a wasteful number, since it uses less digits than its factorization.

288643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16996.

The product of its digits is 9216, while the sum is 31.

The square root of 288643 is about 537.2550604694. The cubic root of 288643 is about 66.0876551888.

The spelling of 288643 in words is "two hundred eighty-eight thousand, six hundred forty-three".