6609971 has 2 divisors, whose sum is σ = 6609972. Its totient is φ = 6609970.

The previous prime is 6609893. The next prime is 6609973. The reversal of 6609971 is 1799066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6609971 - 2¹⁸ = 6347827 is a prime.

Together with 6609973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6609973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304985 + 3304986.

It is an arithmetic number, because the mean of its divisors is an integer number (3304986).

Almost surely, 2^6609971 is an apocalyptic number.

6609971 is a deficient number, since it is larger than the sum of its proper divisors (1).

6609971 is an equidigital number, since it uses as much as digits as its factorization.

6609971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 6609971 is about 2570.9863865840. The cubic root of 6609971 is about 187.6721595071.

The spelling of 6609971 in words is "six million, six hundred nine thousand, nine hundred seventy-one".