666217005614 has 8 divisors (see below), whose sum is σ = 1003689375960. Its totient is φ = 331653880296.

The previous prime is 666217005611. The next prime is 666217005661. The reversal of 666217005614 is 416500712666.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666217005611) 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, 727310684 + ... + 727311599.

It is an arithmetic number, because the mean of its divisors is an integer number (125461171995).

Almost surely, 2^666217005614 is an apocalyptic number.

666217005614 is a deficient number, since it is larger than the sum of its proper divisors (337472370346).

666217005614 is a wasteful number, since it uses less digits than its factorization.

666217005614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454622514.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 666217005614 in words is "six hundred sixty-six billion, two hundred seventeen million, five thousand, six hundred fourteen".