666285714 has 24 divisors (see below), whose sum is σ = 1482637260. Its totient is φ = 216092448.

The previous prime is 666285713. The next prime is 666285727. The reversal of 666285714 is 417582666.

It can be written as a sum of positive squares in 2 ways, for example, as 502880625 + 163405089 = 22425^2 + 12783^2 .

666285714 is a modest number, since divided by 285714 gives 666 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 666285714.

It is not an unprimeable number, because it can be changed into a prime (666285713) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 499549 + ... + 500880.

Almost surely, 2^666285714 is an apocalyptic number.

666285714 is an abundant number, since it is smaller than the sum of its proper divisors (816351546).

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

666285714 is a wasteful number, since it uses less digits than its factorization.

666285714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000474 (or 1000471 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 666285714 is about 25812.5108038718. The cubic root of 666285714 is about 873.4140366279.

The spelling of 666285714 in words is "six hundred sixty-six million, two hundred eighty-five thousand, seven hundred fourteen".