6631066979 has 4 divisors (see below), whose sum is σ = 6631229976. Its totient is φ = 6630903984.

The previous prime is 6631066933. The next prime is 6631066987. The reversal of 6631066979 is 9796601366.

It is a happy number.

6631066979 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6631066979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6631066979.

It is not an unprimeable number, because it can be changed into a prime (6631066579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35807 + ... + 120599.

It is an arithmetic number, because the mean of its divisors is an integer number (1657807494).

Almost surely, 2^6631066979 is an apocalyptic number.

6631066979 is a deficient number, since it is larger than the sum of its proper divisors (162997).

6631066979 is an equidigital number, since it uses as much as digits as its factorization.

6631066979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162996.

The product of its (nonzero) digits is 2204496, while the sum is 53.

The square root of 6631066979 is about 81431.3636076420. The cubic root of 6631066979 is about 1878.7160180850.

The spelling of 6631066979 in words is "six billion, six hundred thirty-one million, sixty-six thousand, nine hundred seventy-nine".