667701386165 has 32 divisors (see below), whose sum is σ = 883780934400. Its totient is φ = 480220416000.

The previous prime is 667701386129. The next prime is 667701386179. The reversal of 667701386165 is 561683107766.

It is not a de Polignac number, because 667701386165 - 2¹² = 667701382069 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 667701386165.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 6892736 + ... + 6988934.

It is an arithmetic number, because the mean of its divisors is an integer number (27618154200).

Almost surely, 2^667701386165 is an apocalyptic number.

It is an amenable number.

667701386165 is a deficient number, since it is larger than the sum of its proper divisors (216079548235).

667701386165 is a wasteful number, since it uses less digits than its factorization.

667701386165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97613.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 667701386165 in words is "six hundred sixty-seven billion, seven hundred one million, three hundred eighty-six thousand, one hundred sixty-five".