164670 has 32 divisors (see below), whose sum is σ = 432000. Its totient is φ = 39840.

The previous prime is 164663. The next prime is 164677. The reversal of 164670 is 76461.

164670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (164663) and next prime (164677).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 164670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81 + ... + 579.

It is an arithmetic number, because the mean of its divisors is an integer number (13500).

2¹⁶⁴⁶⁷⁰ is an apocalyptic number.

164670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 164670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216000).

164670 is an abundant number, since it is smaller than the sum of its proper divisors (267330).

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

164670 is a wasteful number, since it uses less digits than its factorization.

164670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 164670 is about 405.7955150073. The cubic root of 164670 is about 54.8114757433.

Subtracting from 164670 its reverse (76461), we obtain a square (88209 = 297²).

The spelling of 164670 in words is "one hundred sixty-four thousand, six hundred seventy".