128359657 has 2 divisors, whose sum is σ = 128359658. Its totient is φ = 128359656.

The previous prime is 128359613. The next prime is 128359663. The reversal of 128359657 is 756953821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80209936 + 48149721 = 8956^2 + 6939^2 .

It is a cyclic number.

It is not a de Polignac number, because 128359657 - 2¹¹ = 128357609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128359667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64179828 + 64179829.

It is an arithmetic number, because the mean of its divisors is an integer number (64179829).

Almost surely, 2^128359657 is an apocalyptic number.

It is an amenable number.

128359657 is a deficient number, since it is larger than the sum of its proper divisors (1).

128359657 is an equidigital number, since it uses as much as digits as its factorization.

128359657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 453600, while the sum is 46.

The square root of 128359657 is about 11329.5920932750. The cubic root of 128359657 is about 504.4399987838.

The spelling of 128359657 in words is "one hundred twenty-eight million, three hundred fifty-nine thousand, six hundred fifty-seven".