6616469 has 2 divisors, whose sum is σ = 6616470. Its totient is φ = 6616468.

The previous prime is 6616447. The next prime is 6616471. The reversal of 6616469 is 9646166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6061444 + 555025 = 2462^2 + 745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6616469 is a prime.

It is a super-2 number, since 2×6616469² = 87555324055922, which contains 22 as substring.

Together with 6616471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6616499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308234 + 3308235.

It is an arithmetic number, because the mean of its divisors is an integer number (3308235).

Almost surely, 2^6616469 is an apocalyptic number.

It is an amenable number.

6616469 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616469 is an equidigital number, since it uses as much as digits as its factorization.

6616469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 6616469 is about 2572.2497934687. The cubic root of 6616469 is about 187.7336370486.

The spelling of 6616469 in words is "six million, six hundred sixteen thousand, four hundred sixty-nine".