666430041 has 16 divisors (see below), whose sum is σ = 893951424. Its totient is φ = 441606144.

The previous prime is 666430027. The next prime is 666430091. The reversal of 666430041 is 140034666.

It is not a de Polignac number, because 666430041 - 2¹⁹ = 665905753 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 666429990 and 666430008.

It is not an unprimeable number, because it can be changed into a prime (666430091) 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 15 ways as a sum of consecutive naturals, for example, 698821 + ... + 699773.

It is an arithmetic number, because the mean of its divisors is an integer number (55871964).

Almost surely, 2^666430041 is an apocalyptic number.

It is an amenable number.

666430041 is a deficient number, since it is larger than the sum of its proper divisors (227521383).

666430041 is a wasteful number, since it uses less digits than its factorization.

666430041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 666430041 is about 25815.3063317095. The cubic root of 666430041 is about 873.4770967256.

The spelling of 666430041 in words is "six hundred sixty-six million, four hundred thirty thousand, forty-one".