163670 has 16 divisors (see below), whose sum is σ = 317520. Its totient is φ = 60384.

The previous prime is 163661. The next prime is 163673. The reversal of 163670 is 76361.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163673) 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, 500 + ... + 759.

It is an arithmetic number, because the mean of its divisors is an integer number (19845).

2¹⁶³⁶⁷⁰ is an apocalyptic number.

163670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163670 is a deficient number, since it is larger than the sum of its proper divisors (153850).

163670 is a wasteful number, since it uses less digits than its factorization.

163670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 163670 is about 404.5614909998. The cubic root of 163670 is about 54.7002982292.

The spelling of 163670 in words is "one hundred sixty-three thousand, six hundred seventy".