6609973 has 2 divisors, whose sum is σ = 6609974. Its totient is φ = 6609972.

The previous prime is 6609971. The next prime is 6609989. The reversal of 6609973 is 3799066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4072324 + 2537649 = 2018^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 6609973 - 2¹ = 6609971 is a prime.

Together with 6609971, it forms a pair of twin primes.

6609973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6609971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304986 + 3304987.

It is an arithmetic number, because the mean of its divisors is an integer number (3304987).

Almost surely, 2^6609973 is an apocalyptic number.

It is an amenable number.

6609973 is a deficient number, since it is larger than the sum of its proper divisors (1).

6609973 is an equidigital number, since it uses as much as digits as its factorization.

6609973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 6609973 is about 2570.9867755397. The cubic root of 6609973 is about 187.6721784353.

The spelling of 6609973 in words is "six million, six hundred nine thousand, nine hundred seventy-three".