6670004639 has 2 divisors, whose sum is σ = 6670004640. Its totient is φ = 6670004638.

The previous prime is 6670004633. The next prime is 6670004657. The reversal of 6670004639 is 9364000766.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6670004639 - 2¹² = 6670000543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6670004596 and 6670004605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6670004633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3335002319 + 3335002320.

It is an arithmetic number, because the mean of its divisors is an integer number (3335002320).

Almost surely, 2^6670004639 is an apocalyptic number.

6670004639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6670004639 is an equidigital number, since it uses as much as digits as its factorization.

6670004639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 41.

The square root of 6670004639 is about 81670.0963572347. The cubic root of 6670004639 is about 1882.3861205741.

The spelling of 6670004639 in words is "six billion, six hundred seventy million, four thousand, six hundred thirty-nine".