65005616 has 20 divisors (see below), whose sum is σ = 135637152. Its totient is φ = 30002496.

The previous prime is 65005601. The next prime is 65005621. The reversal of 65005616 is 61650056.

It is a super-2 number, since 2×65005616² = 8451460223078912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156056 + ... + 156471.

Almost surely, 2^65005616 is an apocalyptic number.

It is an amenable number.

65005616 is an abundant number, since it is smaller than the sum of its proper divisors (70631536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65005616 is a wasteful number, since it uses less digits than its factorization.

65005616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312548 (or 312542 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 65005616 is about 8062.6060303105. The cubic root of 65005616 is about 402.0841552156.

The spelling of 65005616 in words is "sixty-five million, five thousand, six hundred sixteen".