6640596 has 24 divisors (see below), whose sum is σ = 17216640. Its totient is φ = 2213496.

The previous prime is 6640589. The next prime is 6640597. The reversal of 6640596 is 6950466.

It is a happy number.

6640596 is a `hidden beast` number, since 6 + 64 + 0 + 596 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 6640596.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640597) 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, 30636 + ... + 30851.

It is an arithmetic number, because the mean of its divisors is an integer number (717360).

Almost surely, 2^6640596 is an apocalyptic number.

It is an amenable number.

6640596 is an abundant number, since it is smaller than the sum of its proper divisors (10576044).

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

6640596 is a wasteful number, since it uses less digits than its factorization.

6640596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61500 (or 61492 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 6640596 is about 2576.9353891784. The cubic root of 6640596 is about 187.9615509118.

The spelling of 6640596 in words is "six million, six hundred forty thousand, five hundred ninety-six".