128674727 has 2 divisors, whose sum is σ = 128674728. Its totient is φ = 128674726.

The previous prime is 128674709. The next prime is 128674729. The reversal of 128674727 is 727476821.

128674727 is nontrivially palindromic in base 16.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128674727 - 2⁸ = 128674471 is a prime.

Together with 128674729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128674729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64337363 + 64337364.

It is an arithmetic number, because the mean of its divisors is an integer number (64337364).

Almost surely, 2^128674727 is an apocalyptic number.

128674727 is a deficient number, since it is larger than the sum of its proper divisors (1).

128674727 is an equidigital number, since it uses as much as digits as its factorization.

128674727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 263424, while the sum is 44.

The square root of 128674727 is about 11343.4883082763. The cubic root of 128674727 is about 504.8523922417.

The spelling of 128674727 in words is "one hundred twenty-eight million, six hundred seventy-four thousand, seven hundred twenty-seven".