6419669 has 2 divisors, whose sum is σ = 6419670. Its totient is φ = 6419668.

The previous prime is 6419653. The next prime is 6419671. The reversal of 6419669 is 9669146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6400900 + 18769 = 2530^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 6419669 - 2⁴ = 6419653 is a prime.

It is a super-2 number, since 2×6419669² = 82424300139122, which contains 22 as substring.

Together with 6419671, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6419629) 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, 3209834 + 3209835.

It is an arithmetic number, because the mean of its divisors is an integer number (3209835).

Almost surely, 2^6419669 is an apocalyptic number.

It is an amenable number.

6419669 is a deficient number, since it is larger than the sum of its proper divisors (1).

6419669 is an equidigital number, since it uses as much as digits as its factorization.

6419669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 6419669 is about 2533.7065733822. The cubic root of 6419669 is about 185.8535576042.

The spelling of 6419669 in words is "six million, four hundred nineteen thousand, six hundred sixty-nine".