6649670 has 8 divisors (see below), whose sum is σ = 11969424. Its totient is φ = 2659864.

The previous prime is 6649661. The next prime is 6649681. The reversal of 6649670 is 769466.

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

It is a super-2 number, since 2×6649670² = 88436222217800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332474 + ... + 332493.

It is an arithmetic number, because the mean of its divisors is an integer number (1496178).

Almost surely, 2^6649670 is an apocalyptic number.

6649670 is a deficient number, since it is larger than the sum of its proper divisors (5319754).

6649670 is a wasteful number, since it uses less digits than its factorization.

6649670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664974.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 6649670 is about 2578.6954065961. The cubic root of 6649670 is about 188.0471248999.

It can be divided in two parts, 66496 and 70, that added together give a palindrome (66566).

The spelling of 6649670 in words is "six million, six hundred forty-nine thousand, six hundred seventy".