65445616 has 20 divisors (see below), whose sum is σ = 128228400. Its totient is φ = 32354432.

The previous prime is 65445539. The next prime is 65445617. The reversal of 65445616 is 61654456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65445617) 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, 21556 + ... + 24403.

It is an arithmetic number, because the mean of its divisors is an integer number (6411420).

Almost surely, 2^65445616 is an apocalyptic number.

It is an amenable number.

65445616 is a deficient number, since it is larger than the sum of its proper divisors (62782784).

65445616 is a wasteful number, since it uses less digits than its factorization.

65445616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46056 (or 46050 counting only the distinct ones).

The product of its digits is 86400, while the sum is 37.

The square root of 65445616 is about 8089.8464756755. The cubic root of 65445616 is about 402.9893044961.

The spelling of 65445616 in words is "sixty-five million, four hundred forty-five thousand, six hundred sixteen".