6398559 has 6 divisors (see below), whose sum is σ = 9242376. Its totient is φ = 4265700.

The previous prime is 6398551. The next prime is 6398563. The reversal of 6398559 is 9558936.

6398559 is a `hidden beast` number, since 6 + 3 + 98 + 559 = 666.

6398559 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 6398559 - 2³ = 6398551 is a prime.

It is a super-4 number, since 4×6398559⁴ (a number of 28 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355467 + ... + 355484.

It is an arithmetic number, because the mean of its divisors is an integer number (1540396).

Almost surely, 2^6398559 is an apocalyptic number.

6398559 is a deficient number, since it is larger than the sum of its proper divisors (2843817).

6398559 is a wasteful number, since it uses less digits than its factorization.

6398559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710957 (or 710954 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 6398559 is about 2529.5373094699. The cubic root of 6398559 is about 185.6496178621.

The spelling of 6398559 in words is "six million, three hundred ninety-eight thousand, five hundred fifty-nine".