6469449646 has 12 divisors (see below), whose sum is σ = 10666572336. Its totient is φ = 2940658820.

The previous prime is 6469449619. The next prime is 6469449647.

6469449646 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6469449647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13366390 + ... + 13366873.

It is an arithmetic number, because the mean of its divisors is an integer number (888881028).

Almost surely, 2^6469449646 is an apocalyptic number.

6469449646 is a deficient number, since it is larger than the sum of its proper divisors (4197122690).

6469449646 is a wasteful number, since it uses less digits than its factorization.

6469449646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26733287 (or 26733276 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 58.

The square root of 6469449646 is about 80432.8890815194. The cubic root of 6469449646 is about 1863.3271513974.

The spelling of 6469449646 in words is "six billion, four hundred sixty-nine million, four hundred forty-nine thousand, six hundred forty-six".