6649072 has 10 divisors (see below), whose sum is σ = 12882608. Its totient is φ = 3324528.

The previous prime is 6649063. The next prime is 6649073. The reversal of 6649072 is 2709466.

It is a super-2 number, since 2×6649072² = 88420316922368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207768 + ... + 207799.

Almost surely, 2^6649072 is an apocalyptic number.

It is an amenable number.

6649072 is a deficient number, since it is larger than the sum of its proper divisors (6233536).

6649072 is a wasteful number, since it uses less digits than its factorization.

6649072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415575 (or 415569 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6649072 is about 2578.5794538854. The cubic root of 6649072 is about 188.0414877504.

The spelling of 6649072 in words is "six million, six hundred forty-nine thousand, seventy-two".