6640896 has 36 divisors (see below), whose sum is σ = 17676512. Its totient is φ = 2213376.

The previous prime is 6640891. The next prime is 6640901. The reversal of 6640896 is 6980466.

It is an interprime number because it is at equal distance from previous prime (6640891) and next prime (6640901).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6640891) 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, 3556 + ... + 5091.

Almost surely, 2^6640896 is an apocalyptic number.

It is an amenable number.

6640896 is an abundant number, since it is smaller than the sum of its proper divisors (11035616).

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

6640896 is an equidigital number, since it uses as much as digits as its factorization.

6640896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666 (or 8652 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 6640896 is about 2576.9935971981. The cubic root of 6640896 is about 187.9643813613.

The spelling of 6640896 in words is "six million, six hundred forty thousand, eight hundred ninety-six".