163860 has 24 divisors (see below), whose sum is σ = 458976. Its totient is φ = 43680.

The previous prime is 163859. The next prime is 163861. The reversal of 163860 is 68361.

Added to its reverse (68361) it gives a triangular number (232221 = T₆₈₁).

It is an interprime number because it is at equal distance from previous prime (163859) and next prime (163861).

It is a self number, because there is not a number n which added to its sum of digits gives 163860.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 163860.

It is not an unprimeable number, because it can be changed into a prime (163861) 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, 1306 + ... + 1425.

It is an arithmetic number, because the mean of its divisors is an integer number (19124).

2¹⁶³⁸⁶⁰ is an apocalyptic number.

163860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163860 is an abundant number, since it is smaller than the sum of its proper divisors (295116).

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

163860 is a wasteful number, since it uses less digits than its factorization.

163860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2741 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 163860 is about 404.7962450419. The cubic root of 163860 is about 54.7214567342.

Adding to 163860 its reverse (68361), we get a triangular number (232221 = T₆₈₁).

The spelling of 163860 in words is "one hundred sixty-three thousand, eight hundred sixty".