12678577 has 2 divisors, whose sum is σ = 12678578. Its totient is φ = 12678576.

The previous prime is 12678571. The next prime is 12678619. The reversal of 12678577 is 77587621.

12678577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6533136 + 6145441 = 2556^2 + 2479^2 .

It is a cyclic number.

It is not a de Polignac number, because 12678577 - 2²³ = 4289969 is a prime.

It is not a weakly prime, because it can be changed into another prime (12678571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6339288 + 6339289.

It is an arithmetic number, because the mean of its divisors is an integer number (6339289).

Almost surely, 2^12678577 is an apocalyptic number.

It is an amenable number.

12678577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12678577 is an equidigital number, since it uses as much as digits as its factorization.

12678577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 164640, while the sum is 43.

The square root of 12678577 is about 3560.6989482404. The cubic root of 12678577 is about 233.1793948354.

The spelling of 12678577 in words is "twelve million, six hundred seventy-eight thousand, five hundred seventy-seven".