666748314 has 64 divisors (see below), whose sum is σ = 1523612160. Its totient is φ = 216000000.

The previous prime is 666748307. The next prime is 666748333. The reversal of 666748314 is 413847666.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 666748314.

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, 887439 + ... + 888189.

It is an arithmetic number, because the mean of its divisors is an integer number (23806440).

Almost surely, 2^666748314 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666748314, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (761806080).

666748314 is an abundant number, since it is smaller than the sum of its proper divisors (856863846).

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

666748314 is a wasteful number, since it uses less digits than its factorization.

666748314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1198 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 666748314 is about 25821.4700201209. The cubic root of 666748314 is about 873.6161260382.

The spelling of 666748314 in words is "six hundred sixty-six million, seven hundred forty-eight thousand, three hundred fourteen".