128603597 has 4 divisors (see below), whose sum is σ = 128794236. Its totient is φ = 128412960.

The previous prime is 128603591. The next prime is 128603611. The reversal of 128603597 is 795306821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 795306821 = 547 ⋅1453943.

It can be written as a sum of positive squares in 2 ways, for example, as 116079076 + 12524521 = 10774^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 128603597 - 2⁸ = 128603341 is a prime.

It is a super-2 number, since 2×128603597² = 33077770322676818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128603591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94304 + ... + 95657.

It is an arithmetic number, because the mean of its divisors is an integer number (32198559).

Almost surely, 2^128603597 is an apocalyptic number.

It is an amenable number.

128603597 is a deficient number, since it is larger than the sum of its proper divisors (190639).

128603597 is an equidigital number, since it uses as much as digits as its factorization.

128603597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190638.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 128603597 is about 11340.3525959293. The cubic root of 128603597 is about 504.7593494444.

The spelling of 128603597 in words is "one hundred twenty-eight million, six hundred three thousand, five hundred ninety-seven".