288664 has 8 divisors (see below), whose sum is σ = 541260. Its totient is φ = 144328.

The previous prime is 288661. The next prime is 288679. The reversal of 288664 is 466882.

It is a tau number, because it is divible by the number of its divisors (8).

It is a d-powerful number, because it can be written as 2¹² + 8² + 6³ + 8⁴ + 6⁷ + 4⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18034 + ... + 18049.

2²⁸⁸⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

288664 is a deficient number, since it is larger than the sum of its proper divisors (252596).

288664 is a wasteful number, since it uses less digits than its factorization.

288664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36089 (or 36085 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 288664 is about 537.2746039038. The cubic root of 288664 is about 66.0892578688.

The spelling of 288664 in words is "two hundred eighty-eight thousand, six hundred sixty-four".