6649469 has 4 divisors (see below), whose sum is σ = 6864000. Its totient is φ = 6434940.

The previous prime is 6649453. The next prime is 6649481. The reversal of 6649469 is 9649466.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6649469 - 2⁴ = 6649453 is a prime.

It is a super-2 number, since 2×6649469² = 88430875963922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645469) 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, 107219 + ... + 107280.

It is an arithmetic number, because the mean of its divisors is an integer number (1716000).

Almost surely, 2^6649469 is an apocalyptic number.

It is an amenable number.

6649469 is a deficient number, since it is larger than the sum of its proper divisors (214531).

6649469 is a wasteful number, since it uses less digits than its factorization.

6649469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214530.

The product of its digits is 279936, while the sum is 44.

The square root of 6649469 is about 2578.6564331062. The cubic root of 6649469 is about 188.0452301767.

The spelling of 6649469 in words is "six million, six hundred forty-nine thousand, four hundred sixty-nine".