666016005 has 8 divisors (see below), whose sum is σ = 1065625632. Its totient is φ = 355208528.

The previous prime is 666015941. The next prime is 666016007. The reversal of 666016005 is 500610666.

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 666016005 - 2⁶ = 666015941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666016007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22200519 + ... + 22200548.

It is an arithmetic number, because the mean of its divisors is an integer number (133203204).

Almost surely, 2^666016005 is an apocalyptic number.

It is an amenable number.

666016005 is a deficient number, since it is larger than the sum of its proper divisors (399609627).

666016005 is a wasteful number, since it uses less digits than its factorization.

666016005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44401075.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 666016005 is about 25807.2858898413. The cubic root of 666016005 is about 873.2961695657.

The spelling of 666016005 in words is "six hundred sixty-six million, sixteen thousand, five".