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12797 = 67191
BaseRepresentation
bin11000111111101
3122112222
43013331
5402142
6135125
752211
oct30775
918488
1012797
119684
1274a5
135a95
144941
153bd2
hex31fd

12797 has 4 divisors (see below), whose sum is σ = 13056. Its totient is φ = 12540.

The previous prime is 12791. The next prime is 12799. The reversal of 12797 is 79721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79721 = 292749.

It is a cyclic number.

It is not a de Polignac number, because 12797 - 24 = 12781 is a prime.

It is a super-3 number, since 3×127973 = 6287033356719, which contains 333 as substring.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791) 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, 29 + ... + 162.

It is an arithmetic number, because the mean of its divisors is an integer number (3264).

212797 is an apocalyptic number.

It is an amenable number.

12797 is a deficient number, since it is larger than the sum of its proper divisors (259).

12797 is an equidigital number, since it uses as much as digits as its factorization.

12797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258.

The product of its digits is 882, while the sum is 26.

The square root of 12797 is about 113.1238259608. The cubic root of 12797 is about 23.3903142518.

The spelling of 12797 in words is "twelve thousand, seven hundred ninety-seven".

Divisors: 1 67 191 12797