6484449687 has 4 divisors (see below), whose sum is σ = 8645932920. Its totient is φ = 4322966456.

The previous prime is 6484449683. The next prime is 6484449691. The reversal of 6484449687 is 7869444846.

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

It is an interprime number because it is at equal distance from previous prime (6484449683) and next prime (6484449691).

It is a cyclic number.

It is not a de Polignac number, because 6484449687 - 2² = 6484449683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6484449687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6484449683) 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, 1080741612 + ... + 1080741617.

It is an arithmetic number, because the mean of its divisors is an integer number (2161483230).

Almost surely, 2^6484449687 is an apocalyptic number.

6484449687 is a deficient number, since it is larger than the sum of its proper divisors (2161483233).

6484449687 is a wasteful number, since it uses less digits than its factorization.

6484449687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161483232.

The product of its digits is 37158912, while the sum is 60.

The square root of 6484449687 is about 80526.0807875312. The cubic root of 6484449687 is about 1864.7661408737.

The spelling of 6484449687 in words is "six billion, four hundred eighty-four million, four hundred forty-nine thousand, six hundred eighty-seven".