666165324 has 96 divisors (see below), whose sum is σ = 1759887360. Its totient is φ = 194299200.

The previous prime is 666165301. The next prime is 666165343. The reversal of 666165324 is 423561666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1075887 + ... + 1076505.

It is an arithmetic number, because the mean of its divisors is an integer number (18332160).

Almost surely, 2^666165324 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 666165324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879943680).

666165324 is an abundant number, since it is smaller than the sum of its proper divisors (1093722036).

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

666165324 is a wasteful number, since it uses less digits than its factorization.

666165324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 929 counting only the distinct ones).

The product of its digits is 155520, while the sum is 39.

The square root of 666165324 is about 25810.1786898115. The cubic root of 666165324 is about 873.3614282411.

The spelling of 666165324 in words is "six hundred sixty-six million, one hundred sixty-five thousand, three hundred twenty-four".