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68479 = 31472
BaseRepresentation
bin10000101101111111
310110221021
4100231333
54142404
61245011
7403435
oct205577
9113837
1068479
11474a4
1233767
1325228
141ad55
1515454
hex10b7f

68479 has 6 divisors (see below), whose sum is σ = 72224. Its totient is φ = 64860.

The previous prime is 68477. The next prime is 68483. The reversal of 68479 is 97486.

It is not a de Polignac number, because 68479 - 21 = 68477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68473) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1434 + ... + 1480.

268479 is an apocalyptic number.

68479 is a deficient number, since it is larger than the sum of its proper divisors (3745).

68479 is an equidigital number, since it uses as much as digits as its factorization.

With its successor (68480) it forms an eRAP, since the sums of their prime factors are consecutive (125 and 126).

68479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 78 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 68479 is about 261.6849250530. The cubic root of 68479 is about 40.9121657247.

The spelling of 68479 in words is "sixty-eight thousand, four hundred seventy-nine".

Divisors: 1 31 47 1457 2209 68479