128604547 has 2 divisors, whose sum is σ = 128604548. Its totient is φ = 128604546.

The previous prime is 128604533. The next prime is 128604571. The reversal of 128604547 is 745406821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128604547 - 2¹⁹ = 128080259 is a prime.

It is not a weakly prime, because it can be changed into another prime (128604517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64302273 + 64302274.

It is an arithmetic number, because the mean of its divisors is an integer number (64302274).

Almost surely, 2^128604547 is an apocalyptic number.

128604547 is a deficient number, since it is larger than the sum of its proper divisors (1).

128604547 is an equidigital number, since it uses as much as digits as its factorization.

128604547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 128604547 is about 11340.3944816748. The cubic root of 128604547 is about 504.7605923340.

The spelling of 128604547 in words is "one hundred twenty-eight million, six hundred four thousand, five hundred forty-seven".