164940 has 24 divisors (see below), whose sum is σ = 462000. Its totient is φ = 43968.

The previous prime is 164911. The next prime is 164953. The reversal of 164940 is 49461.

It is a self number, because there is not a number n which added to its sum of digits gives 164940.

It is an unprimeable number.

164940 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 7 ways as a sum of consecutive naturals, for example, 1315 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (19250).

2¹⁶⁴⁹⁴⁰ is an apocalyptic number.

164940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164940 is an abundant number, since it is smaller than the sum of its proper divisors (297060).

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

164940 is a wasteful number, since it uses less digits than its factorization.

164940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761 (or 2759 counting only the distinct ones).

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

The square root of 164940 is about 406.1280586219. The cubic root of 164940 is about 54.8414164679.

The spelling of 164940 in words is "one hundred sixty-four thousand, nine hundred forty".