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63868 = 2272281
BaseRepresentation
bin1111100101111100
310020121111
433211330
54020433
61211404
7354130
oct174574
9106544
1063868
1143a92
1230b64
13230bc
14193c0
1513dcd
hexf97c

63868 has 12 divisors (see below), whose sum is σ = 127792. Its totient is φ = 27360.

The previous prime is 63863. The next prime is 63901. The reversal of 63868 is 86836.

63868 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63863) by changing a digit.

63868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113 + ... + 1168.

263868 is an apocalyptic number.

It is an amenable number.

63868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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 (63896).

63868 is a wasteful number, since it uses less digits than its factorization.

63868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292 (or 2290 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 63868 is about 252.7211902473. The cubic root of 63868 is about 39.9724810721.

The spelling of 63868 in words is "sixty-three thousand, eight hundred sixty-eight".

Divisors: 1 2 4 7 14 28 2281 4562 9124 15967 31934 63868