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12623 = 13971
BaseRepresentation
bin11000101001111
3122022112
43011033
5400443
6134235
751542
oct30517
918275
1012623
119536
12737b
135990
144859
153b18
hex314f

12623 has 4 divisors (see below), whose sum is σ = 13608. Its totient is φ = 11640.

The previous prime is 12619. The next prime is 12637. The reversal of 12623 is 32621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12623 - 22 = 12619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12598 and 12607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613) 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, 473 + ... + 498.

It is an arithmetic number, because the mean of its divisors is an integer number (3402).

212623 is an apocalyptic number.

12623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12623 is a deficient number, since it is larger than the sum of its proper divisors (985).

12623 is an equidigital number, since it uses as much as digits as its factorization.

12623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its digits is 72, while the sum is 14.

The square root of 12623 is about 112.3521250355. The cubic root of 12623 is about 23.2838179006.

The spelling of 12623 in words is "twelve thousand, six hundred twenty-three".

Divisors: 1 13 971 12623