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68750 = 25511
BaseRepresentation
bin10000110010001110
310111022022
4100302032
54200000
61250142
7404303
oct206216
9114268
1068750
1147720
1233952
13253a6
141b0aa
1515585
hex10c8e

68750 has 24 divisors (see below), whose sum is σ = 140616. Its totient is φ = 25000.

The previous prime is 68749. The next prime is 68767. The reversal of 68750 is 5786.

It is a nialpdrome in base 5.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6245 + ... + 6255.

It is an arithmetic number, because the mean of its divisors is an integer number (5859).

268750 is an apocalyptic number.

68750 is an abundant number, since it is smaller than the sum of its proper divisors (71866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70308).

68750 is an equidigital number, since it uses as much as digits as its factorization.

68750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 68750 is about 262.2022120425. The cubic root of 68750 is about 40.9660635300.

It can be divided in two parts, 687 and 50, that added together give a palindrome (737).

The spelling of 68750 in words is "sixty-eight thousand, seven hundred fifty".

Divisors: 1 2 5 10 11 22 25 50 55 110 125 250 275 550 625 1250 1375 2750 3125 6250 6875 13750 34375 68750