6669679001 has 2 divisors, whose sum is σ = 6669679002. Its totient is φ = 6669679000.

The previous prime is 6669678997. The next prime is 6669679067. The reversal of 6669679001 is 1009769666.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6288648601 + 381030400 = 79301^2 + 19520^2 .

It is a cyclic number.

It is not a de Polignac number, because 6669679001 - 2² = 6669678997 is a prime.

It is not a weakly prime, because it can be changed into another prime (6669679501) 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 as a sum of consecutive naturals, namely, 3334839500 + 3334839501.

It is an arithmetic number, because the mean of its divisors is an integer number (3334839501).

Almost surely, 2^6669679001 is an apocalyptic number.

It is an amenable number.

6669679001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6669679001 is an equidigital number, since it uses as much as digits as its factorization.

6669679001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 6669679001 is about 81668.1027145850. The cubic root of 6669679001 is about 1882.3554865911.

The spelling of 6669679001 in words is "six billion, six hundred sixty-nine million, six hundred seventy-nine thousand, one".