666111434 has 8 divisors (see below), whose sum is σ = 1005784608. Its totient is φ = 330849900.

The previous prime is 666111431. The next prime is 666111449. The reversal of 666111434 is 434111666.

666111434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 666111434.

It is not an unprimeable number, because it can be changed into a prime (666111431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102532 + ... + 1103135.

It is an arithmetic number, because the mean of its divisors is an integer number (125723076).

Almost surely, 2^666111434 is an apocalyptic number.

666111434 is a deficient number, since it is larger than the sum of its proper divisors (339673174).

666111434 is a wasteful number, since it uses less digits than its factorization.

666111434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205820.

The product of its digits is 10368, while the sum is 32.

The square root of 666111434 is about 25809.1347007218. The cubic root of 666111434 is about 873.3378771721.

The spelling of 666111434 in words is "six hundred sixty-six million, one hundred eleven thousand, four hundred thirty-four".