6691670603 has 2 divisors, whose sum is σ = 6691670604. Its totient is φ = 6691670602.

The previous prime is 6691670581. The next prime is 6691670641. The reversal of 6691670603 is 3060761966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6691670603 - 2¹² = 6691666507 is a prime.

It is not a weakly prime, because it can be changed into another prime (6691670663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3345835301 + 3345835302.

It is an arithmetic number, because the mean of its divisors is an integer number (3345835302).

Almost surely, 2^6691670603 is an apocalyptic number.

6691670603 is a deficient number, since it is larger than the sum of its proper divisors (1).

6691670603 is an equidigital number, since it uses as much as digits as its factorization.

6691670603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 6691670603 is about 81802.6320053334. The cubic root of 6691670603 is about 1884.4220827078.

The spelling of 6691670603 in words is "six billion, six hundred ninety-one million, six hundred seventy thousand, six hundred three".