65441644 has 24 divisors (see below), whose sum is σ = 117110448. Its totient is φ = 31986240.

The previous prime is 65441639. The next prime is 65441669. The reversal of 65441644 is 44614456.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98674 + ... + 99334.

It is an arithmetic number, because the mean of its divisors is an integer number (4879602).

Almost surely, 2^65441644 is an apocalyptic number.

It is an amenable number.

65441644 is a deficient number, since it is larger than the sum of its proper divisors (51668804).

65441644 is a wasteful number, since it uses less digits than its factorization.

65441644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185 (or 1183 counting only the distinct ones).

The product of its digits is 46080, while the sum is 34.

The square root of 65441644 is about 8089.6009790348. The cubic root of 65441644 is about 402.9811516408.

The spelling of 65441644 in words is "sixty-five million, four hundred forty-one thousand, six hundred forty-four".