667706872216 has 64 divisors (see below), whose sum is σ = 1328299819200. Its totient is φ = 314164032000.

The previous prime is 667706872207. The next prime is 667706872219. The reversal of 667706872216 is 612278607766.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667706872219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1676886 + ... + 2036506.

It is an arithmetic number, because the mean of its divisors is an integer number (20754684675).

Almost surely, 2^667706872216 is an apocalyptic number.

It is an amenable number.

667706872216 is a deficient number, since it is larger than the sum of its proper divisors (660592946984).

667706872216 is a wasteful number, since it uses less digits than its factorization.

667706872216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359860 (or 359856 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 667706872216 in words is "six hundred sixty-seven billion, seven hundred six million, eight hundred seventy-two thousand, two hundred sixteen".