6656600 has 48 divisors (see below), whose sum is σ = 15702120. Its totient is φ = 2624000.

The previous prime is 6656597. The next prime is 6656603. The reversal of 6656600 is 66566.

It is an interprime number because it is at equal distance from previous prime (6656597) and next prime (6656603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656603) 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, 16400 + ... + 16800.

Almost surely, 2^6656600 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 6656600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7851060).

6656600 is an abundant number, since it is smaller than the sum of its proper divisors (9045520).

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

6656600 is a wasteful number, since it uses less digits than its factorization.

6656600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6656600 is about 2580.0387593988. The cubic root of 6656600 is about 188.1124270947.

Multiplying 6656600 by its reverse (66566), we get a square (443103235600 = 665660²).

6656600 divided by its reverse (66566) gives a square (100 = 10²).

The spelling of 6656600 in words is "six million, six hundred fifty-six thousand, six hundred".