6600397667 has 2 divisors, whose sum is σ = 6600397668. Its totient is φ = 6600397666.

The previous prime is 6600397649. The next prime is 6600397697. The reversal of 6600397667 is 7667930066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6600397667 - 2⁶ = 6600397603 is a prime.

It is not a weakly prime, because it can be changed into another prime (6600397697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3300198833 + 3300198834.

It is an arithmetic number, because the mean of its divisors is an integer number (3300198834).

Almost surely, 2^6600397667 is an apocalyptic number.

6600397667 is a deficient number, since it is larger than the sum of its proper divisors (1).

6600397667 is an equidigital number, since it uses as much as digits as its factorization.

6600397667 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1714608, while the sum is 50.

The square root of 6600397667 is about 81242.8314806913. The cubic root of 6600397667 is about 1875.8151280847.

The spelling of 6600397667 in words is "six billion, six hundred million, three hundred ninety-seven thousand, six hundred sixty-seven".