65944945 has 8 divisors (see below), whose sum is σ = 86328000. Its totient is φ = 47959920.

The previous prime is 65944939. The next prime is 65944961. The reversal of 65944945 is 54944956.

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

It is not a de Polignac number, because 65944945 - 2³ = 65944937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65944895 and 65944904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 599445 + ... + 599554.

It is an arithmetic number, because the mean of its divisors is an integer number (10791000).

Almost surely, 2^65944945 is an apocalyptic number.

It is an amenable number.

65944945 is a deficient number, since it is larger than the sum of its proper divisors (20383055).

65944945 is a wasteful number, since it uses less digits than its factorization.

65944945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199015.

The product of its digits is 777600, while the sum is 46.

The square root of 65944945 is about 8120.6492967004. The cubic root of 65944945 is about 404.0116018790.

The spelling of 65944945 in words is "sixty-five million, nine hundred forty-four thousand, nine hundred forty-five".