288665616 has 20 divisors (see below), whose sum is σ = 745719632. Its totient is φ = 96221856.

The previous prime is 288665581. The next prime is 288665621. The reversal of 288665616 is 616566882.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 6013867 = 288665616 / (2 + 8 + 8 + 6 + 6 + 5 + 6 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3006886 + ... + 3006981.

Almost surely, 2^288665616 is an apocalyptic number.

It is an amenable number.

288665616 is an abundant number, since it is smaller than the sum of its proper divisors (457054016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

288665616 is a wasteful number, since it uses less digits than its factorization.

288665616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6013878 (or 6013872 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 288665616 is about 16990.1623300073. The cubic root of 288665616 is about 660.8938119562.

The spelling of 288665616 in words is "two hundred eighty-eight million, six hundred sixty-five thousand, six hundred sixteen".