6649672966 has 8 divisors (see below), whose sum is σ = 10066019040. Its totient is φ = 3294333288.

The previous prime is 6649672963. The next prime is 6649672973. The reversal of 6649672966 is 6692769466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649672963) 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, 15251326 + ... + 15251761.

It is an arithmetic number, because the mean of its divisors is an integer number (1258252380).

Almost surely, 2^6649672966 is an apocalyptic number.

6649672966 is a deficient number, since it is larger than the sum of its proper divisors (3416346074).

6649672966 is a wasteful number, since it uses less digits than its factorization.

6649672966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30503198.

The product of its digits is 35271936, while the sum is 61.

The square root of 6649672966 is about 81545.5269527397. The cubic root of 6649672966 is about 1880.4715285859.

The spelling of 6649672966 in words is "six billion, six hundred forty-nine million, six hundred seventy-two thousand, nine hundred sixty-six".