12546977 has 2 divisors, whose sum is σ = 12546978. Its totient is φ = 12546976.

The previous prime is 12546949. The next prime is 12546991. The reversal of 12546977 is 77964521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 43681 = 3536^2 + 209^2 .

It is an emirp because it is prime and its reverse (77964521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12546977 - 2⁶ = 12546913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12546917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273488 + 6273489.

It is an arithmetic number, because the mean of its divisors is an integer number (6273489).

Almost surely, 2^12546977 is an apocalyptic number.

It is an amenable number.

12546977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12546977 is an equidigital number, since it uses as much as digits as its factorization.

12546977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 41.

The square root of 12546977 is about 3542.1712268043. The cubic root of 12546977 is about 232.3698087933.

The spelling of 12546977 in words is "twelve million, five hundred forty-six thousand, nine hundred seventy-seven".