65444668 has 12 divisors (see below), whose sum is σ = 114656472. Its totient is φ = 32685680.

The previous prime is 65444647. The next prime is 65444669. The reversal of 65444668 is 86644456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65444669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4930 + ... + 12457.

It is an arithmetic number, because the mean of its divisors is an integer number (9554706).

Almost surely, 2^65444668 is an apocalyptic number.

It is an amenable number.

65444668 is a deficient number, since it is larger than the sum of its proper divisors (49211804).

65444668 is a wasteful number, since it uses less digits than its factorization.

65444668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18332 (or 18330 counting only the distinct ones).

The product of its digits is 552960, while the sum is 43.

The square root of 65444668 is about 8089.7878834986. The cubic root of 65444668 is about 402.9873586784.

The spelling of 65444668 in words is "sixty-five million, four hundred forty-four thousand, six hundred sixty-eight".