6649646 has 8 divisors (see below), whose sum is σ = 10001664. Its totient is φ = 3315760.

The previous prime is 6649633. The next prime is 6649661. The reversal of 6649646 is 6469466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3575 + ... + 5106.

It is an arithmetic number, because the mean of its divisors is an integer number (1250208).

Almost surely, 2^6649646 is an apocalyptic number.

6649646 is a deficient number, since it is larger than the sum of its proper divisors (3352018).

6649646 is a wasteful number, since it uses less digits than its factorization.

6649646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066.

The product of its digits is 186624, while the sum is 41.

The square root of 6649646 is about 2578.6907530761. The cubic root of 6649646 is about 188.0468986663.

The spelling of 6649646 in words is "six million, six hundred forty-nine thousand, six hundred forty-six".