65441669 has 2 divisors, whose sum is σ = 65441670. Its totient is φ = 65441668.

The previous prime is 65441639. The next prime is 65441671. The reversal of 65441669 is 96614456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39564100 + 25877569 = 6290^2 + 5087^2 .

It is a cyclic number.

It is not a de Polignac number, because 65441669 - 2⁸ = 65441413 is a prime.

It is a super-2 number, since 2×65441669² = 8565224083011122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 65441671, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65441639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32720834 + 32720835.

It is an arithmetic number, because the mean of its divisors is an integer number (32720835).

Almost surely, 2^65441669 is an apocalyptic number.

It is an amenable number.

65441669 is a deficient number, since it is larger than the sum of its proper divisors (1).

65441669 is an equidigital number, since it uses as much as digits as its factorization.

65441669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 65441669 is about 8089.6025242282. The cubic root of 65441669 is about 402.9812029564.

The spelling of 65441669 in words is "sixty-five million, four hundred forty-one thousand, six hundred sixty-nine".