128632597 has 2 divisors, whose sum is σ = 128632598. Its totient is φ = 128632596.

The previous prime is 128632541. The next prime is 128632607. The reversal of 128632597 is 795236821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79548561 + 49084036 = 8919^2 + 7006^2 .

It is an emirp because it is prime and its reverse (795236821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128632597 - 2¹⁵ = 128599829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128630597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64316298 + 64316299.

It is an arithmetic number, because the mean of its divisors is an integer number (64316299).

Almost surely, 2^128632597 is an apocalyptic number.

It is an amenable number.

128632597 is a deficient number, since it is larger than the sum of its proper divisors (1).

128632597 is an equidigital number, since it uses as much as digits as its factorization.

128632597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 128632597 is about 11341.6311437112. The cubic root of 128632597 is about 504.7972875253.

The spelling of 128632597 in words is "one hundred twenty-eight million, six hundred thirty-two thousand, five hundred ninety-seven".