Search a number
-
+
164685 = 3510979
BaseRepresentation
bin101000001101001101
322100220110
4220031031
520232220
63310233
71254063
oct501515
9270813
10164685
11102804
127b379
1359c61
1444033
1533be0
hex2834d

164685 has 8 divisors (see below), whose sum is σ = 263520. Its totient is φ = 87824.

The previous prime is 164683. The next prime is 164701. The reversal of 164685 is 586461.

164685 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164685 - 21 = 164683 is a prime.

It is a super-2 number, since 2×1646852 = 54242298450, which contains 22 as substring.

164685 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164683) 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, 5475 + ... + 5504.

It is an arithmetic number, because the mean of its divisors is an integer number (32940).

2164685 is an apocalyptic number.

164685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164685 is a deficient number, since it is larger than the sum of its proper divisors (98835).

164685 is a wasteful number, since it uses less digits than its factorization.

164685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10987.

The product of its digits is 5760, while the sum is 30.

The square root of 164685 is about 405.8139968015. The cubic root of 164685 is about 54.8131399751.

The spelling of 164685 in words is "one hundred sixty-four thousand, six hundred eighty-five".

Divisors: 1 3 5 15 10979 32937 54895 164685