6658871 has 2 divisors, whose sum is σ = 6658872. Its totient is φ = 6658870.

The previous prime is 6658859. The next prime is 6658903. The reversal of 6658871 is 1788566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6658871 - 2¹⁴ = 6642487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6658471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3329435 + 3329436.

It is an arithmetic number, because the mean of its divisors is an integer number (3329436).

Almost surely, 2^6658871 is an apocalyptic number.

6658871 is a deficient number, since it is larger than the sum of its proper divisors (1).

6658871 is an equidigital number, since it uses as much as digits as its factorization.

6658871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 41.

The square root of 6658871 is about 2580.4788315350. The cubic root of 6658871 is about 188.1338171311.

The spelling of 6658871 in words is "six million, six hundred fifty-eight thousand, eight hundred seventy-one".