666705035 has 16 divisors (see below), whose sum is σ = 825248736. Its totient is φ = 516688128.

The previous prime is 666705019. The next prime is 666705043. The reversal of 666705035 is 530507666.

It is not a de Polignac number, because 666705035 - 2⁴ = 666705019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 666705035.

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 15 ways as a sum of consecutive naturals, for example, 35372 + ... + 50838.

It is an arithmetic number, because the mean of its divisors is an integer number (51578046).

Almost surely, 2^666705035 is an apocalyptic number.

666705035 is a deficient number, since it is larger than the sum of its proper divisors (158543701).

666705035 is a wasteful number, since it uses less digits than its factorization.

666705035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15742.

The product of its (nonzero) digits is 113400, while the sum is 38.

The square root of 666705035 is about 25820.6319636062. The cubic root of 666705035 is about 873.5972233280.

The spelling of 666705035 in words is "six hundred sixty-six million, seven hundred five thousand, thirty-five".