666271024 has 40 divisors (see below), whose sum is σ = 1371608640. Its totient is φ = 312637248.

The previous prime is 666270989. The next prime is 666271037. The reversal of 666271024 is 420172666.

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 7 ways as a sum of consecutive naturals, for example, 22287 + ... + 42769.

It is an arithmetic number, because the mean of its divisors is an integer number (34290216).

Almost surely, 2^666271024 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 666271024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685804320).

666271024 is an abundant number, since it is smaller than the sum of its proper divisors (705337616).

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

666271024 is a wasteful number, since it uses less digits than its factorization.

666271024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20617 (or 20611 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 666271024 is about 25812.2262503644. The cubic root of 666271024 is about 873.4076176866.

The spelling of 666271024 in words is "six hundred sixty-six million, two hundred seventy-one thousand, twenty-four".