666000023 has 8 divisors (see below), whose sum is σ = 734724816. Its totient is φ = 599774400.

The previous prime is 666000019. The next prime is 666000043. The reversal of 666000023 is 320000666.

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

It is a cyclic number.

It is not a de Polignac number, because 666000023 - 2² = 666000019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666000043) 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 7 ways as a sum of consecutive naturals, for example, 624233 + ... + 625298.

It is an arithmetic number, because the mean of its divisors is an integer number (91840602).

Almost surely, 2^666000023 is an apocalyptic number.

666000023 is a deficient number, since it is larger than the sum of its proper divisors (68724793).

666000023 is a wasteful number, since it uses less digits than its factorization.

666000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249585.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 666000023 is about 25806.9762467438. The cubic root of 666000023 is about 873.2891841825.

Adding to 666000023 its reverse (320000666), we get a palindrome (986000689).

The spelling of 666000023 in words is "six hundred sixty-six million, twenty-three", and thus it is an aban number.