6499877887 has 8 divisors (see below), whose sum is σ = 6663599712. Its totient is φ = 6336403200.

The previous prime is 6499877873. The next prime is 6499877939. The reversal of 6499877887 is 7887789946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6499877887 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 (6499875887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7939 + ... + 114292.

It is an arithmetic number, because the mean of its divisors is an integer number (832949964).

Almost surely, 2^6499877887 is an apocalyptic number.

6499877887 is a deficient number, since it is larger than the sum of its proper divisors (163721825).

6499877887 is a wasteful number, since it uses less digits than its factorization.

6499877887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123569.

The product of its digits is 341397504, while the sum is 73.

The square root of 6499877887 is about 80621.8201667514. The cubic root of 6499877887 is about 1866.2438914602.

The spelling of 6499877887 in words is "six billion, four hundred ninety-nine million, eight hundred seventy-seven thousand, eight hundred eighty-seven".