667743065563 has 8 divisors (see below), whose sum is σ = 763445295360. Its totient is φ = 572118426600.

The previous prime is 667743065551. The next prime is 667743065567. The reversal of 667743065563 is 365560347766.

It is a happy number.

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

It is not a de Polignac number, because 667743065563 - 2³³ = 659153130971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667743065498 and 667743065507.

It is not an unprimeable number, because it can be changed into a prime (667743065567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19379263 + ... + 19413688.

It is an arithmetic number, because the mean of its divisors is an integer number (95430661920).

Almost surely, 2^667743065563 is an apocalyptic number.

667743065563 is a deficient number, since it is larger than the sum of its proper divisors (95702229797).

667743065563 is a wasteful number, since it uses less digits than its factorization.

667743065563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38795417.

The product of its (nonzero) digits is 57153600, while the sum is 58.

The spelling of 667743065563 in words is "six hundred sixty-seven billion, seven hundred forty-three million, sixty-five thousand, five hundred sixty-three".