6699280871 has 2 divisors, whose sum is σ = 6699280872. Its totient is φ = 6699280870.

The previous prime is 6699280867. The next prime is 6699280901. The reversal of 6699280871 is 1780829966.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6699280871 - 2² = 6699280867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6699280171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3349640435 + 3349640436.

It is an arithmetic number, because the mean of its divisors is an integer number (3349640436).

Almost surely, 2^6699280871 is an apocalyptic number.

6699280871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6699280871 is an equidigital number, since it uses as much as digits as its factorization.

6699280871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 6699280871 is about 81849.1348213284. The cubic root of 6699280871 is about 1885.1361806176.

The spelling of 6699280871 in words is "six billion, six hundred ninety-nine million, two hundred eighty thousand, eight hundred seventy-one".