18608689 has 8 divisors (see below), whose sum is σ = 20404800. Its totient is φ = 16830000.

The previous prime is 18608627. The next prime is 18608717. The reversal of 18608689 is 98680681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18608689 - 2⁷ = 18608561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18608089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2062 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (2550600).

Almost surely, 2^18608689 is an apocalyptic number.

It is an amenable number.

18608689 is a deficient number, since it is larger than the sum of its proper divisors (1796111).

18608689 is a wasteful number, since it uses less digits than its factorization.

18608689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8711.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 18608689 is about 4313.7789697665. The cubic root of 18608689 is about 264.9955570633.

The spelling of 18608689 in words is "eighteen million, six hundred eight thousand, six hundred eighty-nine".