667340373407 has 4 divisors (see below), whose sum is σ = 667391803320. Its totient is φ = 667288943496.

The previous prime is 667340373367. The next prime is 667340373521. The reversal of 667340373407 is 704373043766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667340373407 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 (667340373307) 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, 25695488 + ... + 25721445.

It is an arithmetic number, because the mean of its divisors is an integer number (166847950830).

Almost surely, 2^667340373407 is an apocalyptic number.

667340373407 is a deficient number, since it is larger than the sum of its proper divisors (51429913).

667340373407 is a wasteful number, since it uses less digits than its factorization.

667340373407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51429912.

The product of its (nonzero) digits is 5334336, while the sum is 50.

The spelling of 667340373407 in words is "six hundred sixty-seven billion, three hundred forty million, three hundred seventy-three thousand, four hundred seven".