666150716 has 96 divisors (see below), whose sum is σ = 1553664000. Its totient is φ = 242066880.

The previous prime is 666150691. The next prime is 666150731. The reversal of 666150716 is 617051666.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a self number, because there is not a number n which added to its sum of digits gives 666150716.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 391235 + ... + 392933.

It is an arithmetic number, because the mean of its divisors is an integer number (16184000).

Almost surely, 2^666150716 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 666150716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776832000).

666150716 is an abundant number, since it is smaller than the sum of its proper divisors (887513284).

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

666150716 is a wasteful number, since it uses less digits than its factorization.

666150716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1807 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 666150716 is about 25809.8956991306. The cubic root of 666150716 is about 873.3550443618.

The spelling of 666150716 in words is "six hundred sixty-six million, one hundred fifty thousand, seven hundred sixteen".