6599616 has 56 divisors (see below), whose sum is σ = 17952720. Its totient is φ = 2138112.

The previous prime is 6599611. The next prime is 6599627. The reversal of 6599616 is 6169956.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6599611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6640 + ... + 7568.

Almost surely, 2^6599616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6599616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8976360).

6599616 is an abundant number, since it is smaller than the sum of its proper divisors (11353104).

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

6599616 is a wasteful number, since it uses less digits than its factorization.

6599616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 971 counting only the distinct ones).

The product of its digits is 87480, while the sum is 42.

The square root of 6599616 is about 2568.9717787473. The cubic root of 6599616 is about 187.5741075947.

It can be divided in two parts, 65 and 99616, that added together give a triangular number (99681 = T₄₄₆).

The spelling of 6599616 in words is "six million, five hundred ninety-nine thousand, six hundred sixteen".