128584783 has 2 divisors, whose sum is σ = 128584784. Its totient is φ = 128584782.

The previous prime is 128584759. The next prime is 128584843. The reversal of 128584783 is 387485821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128584783 - 2²¹ = 126487631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128585783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64292391 + 64292392.

It is an arithmetic number, because the mean of its divisors is an integer number (64292392).

Almost surely, 2^128584783 is an apocalyptic number.

128584783 is a deficient number, since it is larger than the sum of its proper divisors (1).

128584783 is an equidigital number, since it uses as much as digits as its factorization.

128584783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 430080, while the sum is 46.

The square root of 128584783 is about 11339.5230499347. The cubic root of 128584783 is about 504.7347337371.

It can be divided in two parts, 1285 and 84783, that added together give a palindrome (86068).

The spelling of 128584783 in words is "one hundred twenty-eight million, five hundred eighty-four thousand, seven hundred eighty-three".