12966977 has 2 divisors, whose sum is σ = 12966978. Its totient is φ = 12966976.

The previous prime is 12966929. The next prime is 12966991. The reversal of 12966977 is 77966921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7187761 + 5779216 = 2681^2 + 2404^2 .

It is an emirp because it is prime and its reverse (77966921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12966977 - 2¹⁴ = 12950593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12966997) 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, 6483488 + 6483489.

It is an arithmetic number, because the mean of its divisors is an integer number (6483489).

Almost surely, 2^12966977 is an apocalyptic number.

It is an amenable number.

12966977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12966977 is an equidigital number, since it uses as much as digits as its factorization.

12966977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 47.

The square root of 12966977 is about 3600.9688973941. The cubic root of 12966977 is about 234.9342021916.

The spelling of 12966977 in words is "twelve million, nine hundred sixty-six thousand, nine hundred seventy-seven".