12649171 has 2 divisors, whose sum is σ = 12649172. Its totient is φ = 12649170.

The previous prime is 12649141. The next prime is 12649177. The reversal of 12649171 is 17194621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12649171 - 2⁹ = 12648659 is a prime.

It is not a weakly prime, because it can be changed into another prime (12649177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324585 + 6324586.

It is an arithmetic number, because the mean of its divisors is an integer number (6324586).

Almost surely, 2^12649171 is an apocalyptic number.

12649171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12649171 is an equidigital number, since it uses as much as digits as its factorization.

12649171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 12649171 is about 3556.5673057036. The cubic root of 12649171 is about 232.9989807590.

The spelling of 12649171 in words is "twelve million, six hundred forty-nine thousand, one hundred seventy-one".