12645877 has 2 divisors, whose sum is σ = 12645878. Its totient is φ = 12645876.

The previous prime is 12645869. The next prime is 12645889. The reversal of 12645877 is 77854621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6687396 + 5958481 = 2586^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 12645877 - 2³ = 12645869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12645077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6322938 + 6322939.

It is an arithmetic number, because the mean of its divisors is an integer number (6322939).

Almost surely, 2^12645877 is an apocalyptic number.

It is an amenable number.

12645877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12645877 is an equidigital number, since it uses as much as digits as its factorization.

12645877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 12645877 is about 3556.1041885749. The cubic root of 12645877 is about 232.9787537345.

The spelling of 12645877 in words is "twelve million, six hundred forty-five thousand, eight hundred seventy-seven".