865980324 has 72 divisors (see below), whose sum is σ = 2414936160. Its totient is φ = 259459200.

The previous prime is 865980277. The next prime is 865980373. The reversal of 865980324 is 423089568.

It is a self number, because there is not a number n which added to its sum of digits gives 865980324.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22959 + ... + 47529.

It is an arithmetic number, because the mean of its divisors is an integer number (33540780).

Almost surely, 2^865980324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 865980324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1207468080).

865980324 is an abundant number, since it is smaller than the sum of its proper divisors (1548955836).

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

865980324 is a wasteful number, since it uses less digits than its factorization.

865980324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24681 (or 24676 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 865980324 is about 29427.5436283765. The cubic root of 865980324 is about 953.1677538023.

It can be divided in two parts, 865 and 980324, that added together give a palindrome (981189).

The spelling of 865980324 in words is "eight hundred sixty-five million, nine hundred eighty thousand, three hundred twenty-four".