865432945 has 24 divisors (see below), whose sum is σ = 1143676800. Its totient is φ = 628220736.

The previous prime is 865432901. The next prime is 865432969. The reversal of 865432945 is 549234568.

It is not a de Polignac number, because 865432945 - 2⁷ = 865432817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 865432895 and 865432904.

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 23 ways as a sum of consecutive naturals, for example, 41176 + ... + 58534.

It is an arithmetic number, because the mean of its divisors is an integer number (47653200).

Almost surely, 2^865432945 is an apocalyptic number.

It is an amenable number.

865432945 is a deficient number, since it is larger than the sum of its proper divisors (278243855).

865432945 is a wasteful number, since it uses less digits than its factorization.

865432945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17449 (or 17436 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 46.

The square root of 865432945 is about 29418.2417047654. The cubic root of 865432945 is about 952.9668816554.

The spelling of 865432945 in words is "eight hundred sixty-five million, four hundred thirty-two thousand, nine hundred forty-five".