Search a number
-
+
68089 = 771137
BaseRepresentation
bin10000100111111001
310110101211
4100213321
54134324
61243121
7402340
oct204771
9113354
1068089
114717a
12334a1
1324cb8
141ab57
1515294
hex109f9

68089 has 8 divisors (see below), whose sum is σ = 79488. Its totient is φ = 57120.

The previous prime is 68087. The next prime is 68099. The reversal of 68089 is 98086.

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

It is not a de Polignac number, because 68089 - 21 = 68087 is a prime.

It is a super-2 number, since 2×680892 = 9272223842, which contains 22 as substring.

68089 is a strobogrammatic number because it is the same when read upside-down.

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 68089.

It is not an unprimeable number, because it can be changed into a prime (68087) 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, 429 + ... + 565.

It is an arithmetic number, because the mean of its divisors is an integer number (9936).

268089 is an apocalyptic number.

It is an amenable number.

68089 is a deficient number, since it is larger than the sum of its proper divisors (11399).

68089 is a wasteful number, since it uses less digits than its factorization.

68089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 68089 is about 260.9386901170. The cubic root of 68089 is about 40.8343504768.

The spelling of 68089 in words is "sixty-eight thousand, eighty-nine".

Divisors: 1 7 71 137 497 959 9727 68089