128730653 has 2 divisors, whose sum is σ = 128730654. Its totient is φ = 128730652.

The previous prime is 128730619. The next prime is 128730703. The reversal of 128730653 is 356037821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128436889 + 293764 = 11333^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 128730653 - 2⁸ = 128730397 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128730253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64365326 + 64365327.

It is an arithmetic number, because the mean of its divisors is an integer number (64365327).

Almost surely, 2^128730653 is an apocalyptic number.

It is an amenable number.

128730653 is a deficient number, since it is larger than the sum of its proper divisors (1).

128730653 is an equidigital number, since it uses as much as digits as its factorization.

128730653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 128730653 is about 11345.9531552003. The cubic root of 128730653 is about 504.9255231147.

The spelling of 128730653 in words is "one hundred twenty-eight million, seven hundred thirty thousand, six hundred fifty-three".