865648922 has 8 divisors (see below), whose sum is σ = 1298808372. Its totient is φ = 432712800.

The previous prime is 865648921. The next prime is 865648933. The reversal of 865648922 is 229846568.

It can be written as a sum of positive squares in 2 ways, for example, as 718293601 + 147355321 = 26801^2 + 12139^2 .

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

It is not an unprimeable number, because it can be changed into a prime (865648921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45779 + ... + 61862.

Almost surely, 2^865648922 is an apocalyptic number.

865648922 is a deficient number, since it is larger than the sum of its proper divisors (433159450).

865648922 is a wasteful number, since it uses less digits than its factorization.

865648922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111664.

The product of its digits is 1658880, while the sum is 50.

The square root of 865648922 is about 29421.9122763970. The cubic root of 865648922 is about 953.0461490365.

The spelling of 865648922 in words is "eight hundred sixty-five million, six hundred forty-eight thousand, nine hundred twenty-two".