666700333667 has 8 divisors (see below), whose sum is σ = 699183225600. Its totient is φ = 634508768520.

The previous prime is 666700333661. The next prime is 666700333681. The reversal of 666700333667 is 766333007666.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666700333667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666700333661) 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, 72827009 + ... + 72836162.

It is an arithmetic number, because the mean of its divisors is an integer number (87397903200).

Almost surely, 2^666700333667 is an apocalyptic number.

666700333667 is a deficient number, since it is larger than the sum of its proper divisors (32482891933).

666700333667 is a wasteful number, since it uses less digits than its factorization.

666700333667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145663393.

The product of its (nonzero) digits is 10287648, while the sum is 53.

The spelling of 666700333667 in words is "six hundred sixty-six billion, seven hundred million, three hundred thirty-three thousand, six hundred sixty-seven".