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164723 = 1312671
BaseRepresentation
bin101000001101110011
322100221212
4220031303
520232343
63310335
71254146
oct501563
9270855
10164723
11102839
127b3ab
1359c90
144405d
1533c18
hex28373

164723 has 4 divisors (see below), whose sum is σ = 177408. Its totient is φ = 152040.

The previous prime is 164707. The next prime is 164729. The reversal of 164723 is 327461.

164723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327461 = 3171033.

It is a cyclic number.

It is not a de Polignac number, because 164723 - 24 = 164707 is a prime.

It is a d-powerful number, because it can be written as 1 + 63 + 75 + 47 + 217 + 35 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6323 + ... + 6348.

It is an arithmetic number, because the mean of its divisors is an integer number (44352).

2164723 is an apocalyptic number.

164723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

164723 is a deficient number, since it is larger than the sum of its proper divisors (12685).

164723 is a wasteful number, since it uses less digits than its factorization.

164723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12684.

The product of its digits is 1008, while the sum is 23.

The square root of 164723 is about 405.8608135802. The cubic root of 164723 is about 54.8173555769.

The spelling of 164723 in words is "one hundred sixty-four thousand, seven hundred twenty-three".

Divisors: 1 13 12671 164723