666540003364 has 24 divisors (see below), whose sum is σ = 1237230068760. Its totient is φ = 313114607616.

The previous prime is 666540003317. The next prime is 666540003383. The reversal of 666540003364 is 463300045666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 142248156964 + 524291846400 = 377158^2 + 724080^2 .

It is a super-2 number, since 2×666540003364² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 666540003364.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8574717 + ... + 8652100.

It is an arithmetic number, because the mean of its divisors is an integer number (51551252865).

Almost surely, 2^666540003364 is an apocalyptic number.

It is an amenable number.

666540003364 is a deficient number, since it is larger than the sum of its proper divisors (570690065396).

666540003364 is a wasteful number, since it uses less digits than its factorization.

666540003364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17227407 (or 17227405 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 43.

The spelling of 666540003364 in words is "six hundred sixty-six billion, five hundred forty million, three thousand, three hundred sixty-four".