65044643 has 2 divisors, whose sum is σ = 65044644. Its totient is φ = 65044642.

The previous prime is 65044627. The next prime is 65044649. The reversal of 65044643 is 34644056.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65044643 - 2⁴ = 65044627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65044649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32522321 + 32522322.

It is an arithmetic number, because the mean of its divisors is an integer number (32522322).

Almost surely, 2^65044643 is an apocalyptic number.

65044643 is a deficient number, since it is larger than the sum of its proper divisors (1).

65044643 is an equidigital number, since it uses as much as digits as its factorization.

65044643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 65044643 is about 8065.0259144035. The cubic root of 65044643 is about 402.1646046701.

Adding to 65044643 its reverse (34644056), we get a palindrome (99688699).

The spelling of 65044643 in words is "sixty-five million, forty-four thousand, six hundred forty-three".