6618497 has 2 divisors, whose sum is σ = 6618498. Its totient is φ = 6618496.

The previous prime is 6618487. The next prime is 6618499. The reversal of 6618497 is 7948166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6105841 + 512656 = 2471^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 6618497 - 2⁶ = 6618433 is a prime.

Together with 6618499, 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 (6618499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309248 + 3309249.

It is an arithmetic number, because the mean of its divisors is an integer number (3309249).

Almost surely, 2^6618497 is an apocalyptic number.

It is an amenable number.

6618497 is a deficient number, since it is larger than the sum of its proper divisors (1).

6618497 is an equidigital number, since it uses as much as digits as its factorization.

6618497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 6618497 is about 2572.6439707041. The cubic root of 6618497 is about 187.7528157034.

The spelling of 6618497 in words is "six million, six hundred eighteen thousand, four hundred ninety-seven".