6659598 has 24 divisors (see below), whose sum is σ = 14641704. Its totient is φ = 2017840.

The previous prime is 6659591. The next prime is 6659623. The reversal of 6659598 is 8959566.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6659591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3861 + ... + 5312.

It is an arithmetic number, because the mean of its divisors is an integer number (610071).

Almost surely, 2^6659598 is an apocalyptic number.

6659598 is an abundant number, since it is smaller than the sum of its proper divisors (7982106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6659598 is a wasteful number, since it uses less digits than its factorization.

6659598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9200 (or 9189 counting only the distinct ones).

The product of its digits is 583200, while the sum is 48.

The square root of 6659598 is about 2580.6196930195. The cubic root of 6659598 is about 188.1406635523.

Subtracting 6659598 from its reverse (8959566), we obtain a cube (2299968 = 132³).

The spelling of 6659598 in words is "six million, six hundred fifty-nine thousand, five hundred ninety-eight".