65603441 has 2 divisors, whose sum is σ = 65603442. Its totient is φ = 65603440.

The previous prime is 65603437. The next prime is 65603443. The reversal of 65603441 is 14430656.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65141041 + 462400 = 8071^2 + 680^2 .

It is a cyclic number.

It is not a de Polignac number, because 65603441 - 2² = 65603437 is a prime.

It is a super-2 number, since 2×65603441² = 8607622942080962, which contains 22 as substring.

Together with 65603443, 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 (65603443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32801720 + 32801721.

It is an arithmetic number, because the mean of its divisors is an integer number (32801721).

Almost surely, 2^65603441 is an apocalyptic number.

It is an amenable number.

65603441 is a deficient number, since it is larger than the sum of its proper divisors (1).

65603441 is an equidigital number, since it uses as much as digits as its factorization.

65603441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 65603441 is about 8099.5951133375. The cubic root of 65603441 is about 403.3129866262.

It can be divided in two parts, 6560 and 3441, that added together give a palindrome (10001).

The spelling of 65603441 in words is "sixty-five million, six hundred three thousand, four hundred forty-one".