6669673 has 2 divisors, whose sum is σ = 6669674. Its totient is φ = 6669672.

The previous prime is 6669671. The next prime is 6669683. The reversal of 6669673 is 3769666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5817744 + 851929 = 2412^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 6669673 - 2¹ = 6669671 is a prime.

Together with 6669671, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6669671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3334836 + 3334837.

It is an arithmetic number, because the mean of its divisors is an integer number (3334837).

Almost surely, 2^6669673 is an apocalyptic number.

It is an amenable number.

6669673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6669673 is an equidigital number, since it uses as much as digits as its factorization.

6669673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 43.

The square root of 6669673 is about 2582.5710058002. The cubic root of 6669673 is about 188.2354922045.

The spelling of 6669673 in words is "six million, six hundred sixty-nine thousand, six hundred seventy-three".