667688333245 has 16 divisors (see below), whose sum is σ = 805377830400. Its totient is φ = 531383618304.

The previous prime is 667688333189. The next prime is 667688333281. The reversal of 667688333245 is 542333886766.

It is a cyclic number.

It is not a de Polignac number, because 667688333245 - 2¹³ = 667688325053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6779797 + ... + 6877573.

It is an arithmetic number, because the mean of its divisors is an integer number (50336114400).

Almost surely, 2^667688333245 is an apocalyptic number.

It is an amenable number.

667688333245 is a deficient number, since it is larger than the sum of its proper divisors (137689497155).

667688333245 is a wasteful number, since it uses less digits than its factorization.

667688333245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104844.

The product of its digits is 104509440, while the sum is 61.

The spelling of 667688333245 in words is "six hundred sixty-seven billion, six hundred eighty-eight million, three hundred thirty-three thousand, two hundred forty-five".