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68964 = 2237821
BaseRepresentation
bin10000110101100100
310111121020
4100311210
54201324
61251140
7405030
oct206544
9114536
1068964
11478a5
1233ab0
132550c
141b1c0
1515679
hex10d64

68964 has 24 divisors (see below), whose sum is σ = 184128. Its totient is φ = 19680.

The previous prime is 68963. The next prime is 68993. The reversal of 68964 is 46986.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (68963) 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 7 ways as a sum of consecutive naturals, for example, 327 + ... + 494.

It is an arithmetic number, because the mean of its divisors is an integer number (7672).

268964 is an apocalyptic number.

It is an amenable number.

68964 is an abundant number, since it is smaller than the sum of its proper divisors (115164).

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 (92064).

68964 is a wasteful number, since it uses less digits than its factorization.

68964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 833 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 68964 is about 262.6099769620. The cubic root of 68964 is about 41.0085248980.

The spelling of 68964 in words is "sixty-eight thousand, nine hundred sixty-four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 821 1642 2463 3284 4926 5747 9852 11494 17241 22988 34482 68964