163659 has 8 divisors (see below), whose sum is σ = 231120. Its totient is φ = 102656.

The previous prime is 163643. The next prime is 163661. The reversal of 163659 is 956361.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 163659 - 2⁴ = 163643 is a prime.

163659 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (163679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554 + ... + 1655.

It is an arithmetic number, because the mean of its divisors is an integer number (28890).

2¹⁶³⁶⁵⁹ is an apocalyptic number.

163659 is a deficient number, since it is larger than the sum of its proper divisors (67461).

163659 is a wasteful number, since it uses less digits than its factorization.

163659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229.

The product of its digits is 4860, while the sum is 30.

The square root of 163659 is about 404.5478958047. The cubic root of 163659 is about 54.6990727617.

The spelling of 163659 in words is "one hundred sixty-three thousand, six hundred fifty-nine".