667802716071 has 8 divisors (see below), whose sum is σ = 892152942960. Its totient is φ = 444327149952.

The previous prime is 667802715997. The next prime is 667802716073. The reversal of 667802716071 is 170617208766.

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

It is a de Polignac number, because none of the positive numbers 2^k-667802716071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667802716073) 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, 218663410 + ... + 218666463.

It is an arithmetic number, because the mean of its divisors is an integer number (111519117870).

Almost surely, 2^667802716071 is an apocalyptic number.

667802716071 is a deficient number, since it is larger than the sum of its proper divisors (224350226889).

667802716071 is a wasteful number, since it uses less digits than its factorization.

667802716071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437330385.

The product of its (nonzero) digits is 1185408, while the sum is 51.

The spelling of 667802716071 in words is "six hundred sixty-seven billion, eight hundred two million, seven hundred sixteen thousand, seventy-one".