163650 has 24 divisors (see below), whose sum is σ = 406224. Its totient is φ = 43600.

The previous prime is 163643. The next prime is 163661. The reversal of 163650 is 56361.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

163650 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (16926).

2¹⁶³⁶⁵⁰ is an apocalyptic number.

163650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163650 is an abundant number, since it is smaller than the sum of its proper divisors (242574).

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

163650 is a wasteful number, since it uses less digits than its factorization.

163650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 163650 is about 404.5367721234. The cubic root of 163650 is about 54.6980700657.

The spelling of 163650 in words is "one hundred sixty-three thousand, six hundred fifty".