Search a number
-
+
68933 = 292377
BaseRepresentation
bin10000110101000101
310111120002
4100311011
54201213
61251045
7404654
oct206505
9114502
1068933
1147877
1233a85
13254b7
141b19b
1515658
hex10d45

68933 has 4 divisors (see below), whose sum is σ = 71340. Its totient is φ = 66528.

The previous prime is 68927. The next prime is 68947. The reversal of 68933 is 33986.

It can be divided in two parts, 68 and 933, that added together give a palindrome (1001).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33986 = 216993.

It can be written as a sum of positive squares in 2 ways, for example, as 31684 + 37249 = 178^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 68933 - 24 = 68917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 2377 = 68933 / (6 + 8 + 9 + 3 + 3).

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68896 and 68905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1160 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (17835).

268933 is an apocalyptic number.

It is an amenable number.

68933 is a deficient number, since it is larger than the sum of its proper divisors (2407).

68933 is a wasteful number, since it uses less digits than its factorization.

68933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406.

The product of its digits is 3888, while the sum is 29.

The square root of 68933 is about 262.5509474369. The cubic root of 68933 is about 41.0023793979.

The spelling of 68933 in words is "sixty-eight thousand, nine hundred thirty-three".

Divisors: 1 29 2377 68933