Search a number
-
+
163669 = 1114879
BaseRepresentation
bin100111111101010101
322022111211
4213331111
520214134
63301421
71251112
oct477525
9268454
10163669
11101a70
127a871
135965c
1443909
1533764
hex27f55

163669 has 4 divisors (see below), whose sum is σ = 178560. Its totient is φ = 148780.

The previous prime is 163661. The next prime is 163673. The reversal of 163669 is 966361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 163669 - 23 = 163661 is a prime.

It is a super-2 number, since 2×1636692 = 53575083122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163661) 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, 7429 + ... + 7450.

It is an arithmetic number, because the mean of its divisors is an integer number (44640).

2163669 is an apocalyptic number.

It is an amenable number.

163669 is a deficient number, since it is larger than the sum of its proper divisors (14891).

163669 is a wasteful number, since it uses less digits than its factorization.

163669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14890.

The product of its digits is 5832, while the sum is 31.

The square root of 163669 is about 404.5602550919. The cubic root of 163669 is about 54.7001868253.

The spelling of 163669 in words is "one hundred sixty-three thousand, six hundred sixty-nine".

Divisors: 1 11 14879 163669