6449665007 has 4 divisors (see below), whose sum is σ = 6789121080. Its totient is φ = 6110208936.

The previous prime is 6449664997. The next prime is 6449665043. The reversal of 6449665007 is 7005669446.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6449665007 - 2²⁰ = 6448616431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6449665097) 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 3 ways as a sum of consecutive naturals, for example, 169728008 + ... + 169728045.

It is an arithmetic number, because the mean of its divisors is an integer number (1697280270).

Almost surely, 2^6449665007 is an apocalyptic number.

6449665007 is a deficient number, since it is larger than the sum of its proper divisors (339456073).

6449665007 is a wasteful number, since it uses less digits than its factorization.

6449665007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339456072.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The square root of 6449665007 is about 80309.8064186435. The cubic root of 6449665007 is about 1861.4257583873.

The spelling of 6449665007 in words is "six billion, four hundred forty-nine million, six hundred sixty-five thousand, seven".