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68753 = 197349
BaseRepresentation
bin10000110010010001
310111022102
4100302101
54200003
61250145
7404306
oct206221
9114272
1068753
1147723
1233955
13253a9
141b0ad
1515588
hex10c91

68753 has 4 divisors (see below), whose sum is σ = 69300. Its totient is φ = 68208.

The previous prime is 68749. The next prime is 68767. The reversal of 68753 is 35786.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 61009 + 7744 = 247^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 68753 - 22 = 68749 is a prime.

It is a d-powerful number, because it can be written as 66 + 8 + 74 + 5 + 39 .

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (68713) 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, 23 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (17325).

268753 is an apocalyptic number.

It is an amenable number.

68753 is a deficient number, since it is larger than the sum of its proper divisors (547).

68753 is a wasteful number, since it uses less digits than its factorization.

68753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 5040, while the sum is 29.

The square root of 68753 is about 262.2079327557. The cubic root of 68753 is about 40.9666593914.

The spelling of 68753 in words is "sixty-eight thousand, seven hundred fifty-three".

Divisors: 1 197 349 68753