12999677 has 2 divisors, whose sum is σ = 12999678. Its totient is φ = 12999676.

The previous prime is 12999673. The next prime is 12999703. The reversal of 12999677 is 77699921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7458361 + 5541316 = 2731^2 + 2354^2 .

It is a cyclic number.

It is not a de Polignac number, because 12999677 - 2² = 12999673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12999673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499838 + 6499839.

It is an arithmetic number, because the mean of its divisors is an integer number (6499839).

Almost surely, 2^12999677 is an apocalyptic number.

It is an amenable number.

12999677 is a deficient number, since it is larger than the sum of its proper divisors (1).

12999677 is an equidigital number, since it uses as much as digits as its factorization.

12999677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 50.

The square root of 12999677 is about 3605.5064831449. The cubic root of 12999677 is about 235.1315213685.

The spelling of 12999677 in words is "twelve million, nine hundred ninety-nine thousand, six hundred seventy-seven".