6486691963 has 4 divisors (see below), whose sum is σ = 6662008000. Its totient is φ = 6311375928.

The previous prime is 6486691949. The next prime is 6486691969. The reversal of 6486691963 is 3691966846.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3691966846 = 2 ⋅1845983423.

It is a cyclic number.

It is not a de Polignac number, because 6486691963 - 2²⁹ = 5949821051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6486691898 and 6486691907.

It is not an unprimeable number, because it can be changed into a prime (6486691969) 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, 87657963 + ... + 87658036.

It is an arithmetic number, because the mean of its divisors is an integer number (1665502000).

Almost surely, 2^6486691963 is an apocalyptic number.

6486691963 is a deficient number, since it is larger than the sum of its proper divisors (175316037).

6486691963 is a wasteful number, since it uses less digits than its factorization.

6486691963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175316036.

The product of its digits is 10077696, while the sum is 58.

The square root of 6486691963 is about 80540.0022535386. The cubic root of 6486691963 is about 1864.9810570039.

The spelling of 6486691963 in words is "six billion, four hundred eighty-six million, six hundred ninety-one thousand, nine hundred sixty-three".