6673186987 has 4 divisors (see below), whose sum is σ = 7065727416. Its totient is φ = 6280646560.

The previous prime is 6673186967. The next prime is 6673187047. The reversal of 6673186987 is 7896813766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7896813766 = 2 ⋅3948406883.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6673186987 is a prime.

It is a super-2 number, since 2×6673186987² = 89062849126932276338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6673186907) 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, 196270189 + ... + 196270222.

It is an arithmetic number, because the mean of its divisors is an integer number (1766431854).

Almost surely, 2^6673186987 is an apocalyptic number.

6673186987 is a deficient number, since it is larger than the sum of its proper divisors (392540429).

6673186987 is a wasteful number, since it uses less digits than its factorization.

6673186987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392540428.

The product of its digits is 18289152, while the sum is 61.

The square root of 6673186987 is about 81689.5769789512. The cubic root of 6673186987 is about 1882.6854434673.

The spelling of 6673186987 in words is "six billion, six hundred seventy-three million, one hundred eighty-six thousand, nine hundred eighty-seven".