6669679016 has 256 divisors, whose sum is σ = 17635000320. Its totient is φ = 2280960000.

The previous prime is 6669679001. The next prime is 6669679067. The reversal of 6669679016 is 6109769666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16632416 + ... + 16632816.

It is an arithmetic number, because the mean of its divisors is an integer number (68886720).

Almost surely, 2^6669679016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6669679016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8817500160).

6669679016 is an abundant number, since it is smaller than the sum of its proper divisors (10965321304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6669679016 is a wasteful number, since it uses less digits than its factorization.

6669679016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 4408992, while the sum is 56.

The square root of 6669679016 is about 81668.1028064201. The cubic root of 6669679016 is about 1882.3554880022.

The spelling of 6669679016 in words is "six billion, six hundred sixty-nine million, six hundred seventy-nine thousand, sixteen".