6531669 has 24 divisors (see below), whose sum is σ = 9993984. Its totient is φ = 4104000.

The previous prime is 6531653. The next prime is 6531673. The reversal of 6531669 is 9661356.

6531669 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6531669 - 2⁴ = 6531653 is a prime.

It is a super-2 number, since 2×6531669² = 85325399851122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531619) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11154 + ... + 11724.

It is an arithmetic number, because the mean of its divisors is an integer number (416416).

Almost surely, 2^6531669 is an apocalyptic number.

It is an amenable number.

6531669 is a deficient number, since it is larger than the sum of its proper divisors (3462315).

6531669 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (6531668) it forms an eRAP, since the sums of their prime factors are consecutive (648 and 649).

With its predecessor (6531668) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (646).

6531669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 646 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 6531669 is about 2555.7130120575. The cubic root of 6531669 is about 186.9281564125.

The spelling of 6531669 in words is "six million, five hundred thirty-one thousand, six hundred sixty-nine".