6469669647 has 12 divisors (see below), whose sum is σ = 10680089680. Its totient is φ = 3696954048.

The previous prime is 6469669643. The next prime is 6469669673. The reversal of 6469669647 is 7469669646.

It is not a de Polignac number, because 6469669647 - 2² = 6469669643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 102693169 = 6469669647 / (6 + 4 + 6 + 9 + 6 + 6 + 9 + 6 + 4 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469669643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51346522 + ... + 51346647.

Almost surely, 2^6469669647 is an apocalyptic number.

6469669647 is a deficient number, since it is larger than the sum of its proper divisors (4210420033).

6469669647 is a wasteful number, since it uses less digits than its factorization.

6469669647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102693182 (or 102693179 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The square root of 6469669647 is about 80434.2566758716. The cubic root of 6469669647 is about 1863.3482726783.

Subtracting 6469669647 from its reverse (7469669646), we obtain a palindrome (999999999).

The spelling of 6469669647 in words is "six billion, four hundred sixty-nine million, six hundred sixty-nine thousand, six hundred forty-seven".