667670407373 has 2 divisors, whose sum is σ = 667670407374. Its totient is φ = 667670407372.

The previous prime is 667670407367. The next prime is 667670407451. The reversal of 667670407373 is 373704076766.

It is a happy number.

667670407373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614025825604 + 53644581769 = 783598^2 + 231613^2 .

It is a cyclic number.

It is not a de Polignac number, because 667670407373 - 2¹⁶ = 667670341837 is a prime.

It is a super-2 number, since 2×667670407373² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667670407303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333835203686 + 333835203687.

It is an arithmetic number, because the mean of its divisors is an integer number (333835203687).

Almost surely, 2^667670407373 is an apocalyptic number.

It is an amenable number.

667670407373 is a deficient number, since it is larger than the sum of its proper divisors (1).

667670407373 is an equidigital number, since it uses as much as digits as its factorization.

667670407373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18670176, while the sum is 56.

The spelling of 667670407373 in words is "six hundred sixty-seven billion, six hundred seventy million, four hundred seven thousand, three hundred seventy-three".