12701729 has 2 divisors, whose sum is σ = 12701730. Its totient is φ = 12701728.

The previous prime is 12701719. The next prime is 12701783. The reversal of 12701729 is 92710721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12061729 + 640000 = 3473^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 12701729 - 2⁸ = 12701473 is a prime.

It is a super-2 number, since 2×12701729² = 322667839178882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12701719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6350864 + 6350865.

It is an arithmetic number, because the mean of its divisors is an integer number (6350865).

Almost surely, 2^12701729 is an apocalyptic number.

It is an amenable number.

12701729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12701729 is an equidigital number, since it uses as much as digits as its factorization.

12701729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 29.

The square root of 12701729 is about 3563.9485125349. The cubic root of 12701729 is about 233.3212426842.

The spelling of 12701729 in words is "twelve million, seven hundred one thousand, seven hundred twenty-nine".