6606644 has 12 divisors (see below), whose sum is σ = 12612768. Its totient is φ = 3003000.

The previous prime is 6606641. The next prime is 6606647. The reversal of 6606644 is 4466066.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6606641) and next prime (6606647).

It is a self number, because there is not a number n which added to its sum of digits gives 6606644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6606641) 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, 75032 + ... + 75119.

It is an arithmetic number, because the mean of its divisors is an integer number (1051064).

Almost surely, 2^6606644 is an apocalyptic number.

It is an amenable number.

6606644 is a deficient number, since it is larger than the sum of its proper divisors (6006124).

6606644 is a wasteful number, since it uses less digits than its factorization.

6606644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150166 (or 150164 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 6606644 is about 2570.3392772161. The cubic root of 6606644 is about 187.6406671823.

The spelling of 6606644 in words is "six million, six hundred six thousand, six hundred forty-four".