667472745700643 has 8 divisors (see below), whose sum is σ = 678481546494816. Its totient is φ = 656508605356800.

The previous prime is 667472745700619. The next prime is 667472745700669. The reversal of 667472745700643 is 346007547274766.

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

It is a cyclic number.

It is not a de Polignac number, because 667472745700643 - 2²⁰ = 667472744652067 is a prime.

It is a super-2 number, since 2×667472745700643² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667472745705643) 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, 11165082446 + ... + 11165142227.

It is an arithmetic number, because the mean of its divisors is an integer number (84810193311852).

Almost surely, 2^{667472745700643} is an apocalyptic number.

667472745700643 is a deficient number, since it is larger than the sum of its proper divisors (11008800794173).

667472745700643 is a wasteful number, since it uses less digits than its factorization.

667472745700643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330225165.

The product of its (nonzero) digits is 995742720, while the sum is 68.

The spelling of 667472745700643 in words is "six hundred sixty-seven trillion, four hundred seventy-two billion, seven hundred forty-five million, seven hundred thousand, six hundred forty-three".