667623527760727 has 4 divisors (see below), whose sum is σ = 668173918139320. Its totient is φ = 667073137382136.

The previous prime is 667623527760703. The next prime is 667623527760781. The reversal of 667623527760727 is 727067725326766.

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

It is a cyclic number.

It is not a de Polignac number, because 667623527760727 - 2¹¹ = 667623527758679 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667623527760727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667623537760727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275195187477 + ... + 275195189902.

It is an arithmetic number, because the mean of its divisors is an integer number (167043479534830).

Almost surely, 2^{667623527760727} is an apocalyptic number.

667623527760727 is a deficient number, since it is larger than the sum of its proper divisors (550390378593).

667623527760727 is a wasteful number, since it uses less digits than its factorization.

667623527760727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550390378592.

The product of its (nonzero) digits is 2613824640, while the sum is 73.

The spelling of 667623527760727 in words is "six hundred sixty-seven trillion, six hundred twenty-three billion, five hundred twenty-seven million, seven hundred sixty thousand, seven hundred twenty-seven".