65165645 has 8 divisors (see below), whose sum is σ = 78261504. Its totient is φ = 52090704.

The previous prime is 65165623. The next prime is 65165651. The reversal of 65165645 is 54656156.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65165645 - 2⁸ = 65165389 is a prime.

It is a super-3 number, since 3×65165645³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 65165599 and 65165608.

It is a congruent number.

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, 2732 + ... + 11738.

It is an arithmetic number, because the mean of its divisors is an integer number (9782688).

Almost surely, 2^65165645 is an apocalyptic number.

It is an amenable number.

65165645 is a deficient number, since it is larger than the sum of its proper divisors (13095859).

65165645 is a wasteful number, since it uses less digits than its factorization.

65165645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10459.

The product of its digits is 108000, while the sum is 38.

The square root of 65165645 is about 8072.5240786262. The cubic root of 65165645 is about 402.4138313283.

The spelling of 65165645 in words is "sixty-five million, one hundred sixty-five thousand, six hundred forty-five".