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BaseRepresentation
bin110001001100…
…110110100001
3220021021022111
4301030312201
511300211242
61140235321
7214425421
oct61146641
926237274
1012897697
11730a25a
12439bb41
132897797
1419da481
1511eb817
hexc4cda1

12897697 has 2 divisors, whose sum is σ = 12897698. Its totient is φ = 12897696.

The previous prime is 12897683. The next prime is 12897761. The reversal of 12897697 is 79679821.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11350161 + 1547536 = 3369^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 12897697 - 27 = 12897569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12897697.

It is not a weakly prime, because it can be changed into another prime (12897667) 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 as a sum of consecutive naturals, namely, 6448848 + 6448849.

It is an arithmetic number, because the mean of its divisors is an integer number (6448849).

Almost surely, 212897697 is an apocalyptic number.

It is an amenable number.

12897697 is a deficient number, since it is larger than the sum of its proper divisors (1).

12897697 is an equidigital number, since it uses as much as digits as its factorization.

12897697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 49.

The square root of 12897697 is about 3591.3363807920. The cubic root of 12897697 is about 234.5150524599.

The spelling of 12897697 in words is "twelve million, eight hundred ninety-seven thousand, six hundred ninety-seven".