667646688062 has 4 divisors (see below), whose sum is σ = 1001470032096. Its totient is φ = 333823344030.

The previous prime is 667646688061. The next prime is 667646688073. The reversal of 667646688062 is 260886646766.

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

It is a self number, because there is not a number n which added to its sum of digits gives 667646688062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667646688061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166911672014 + ... + 166911672017.

It is an arithmetic number, because the mean of its divisors is an integer number (250367508024).

Almost surely, 2^667646688062 is an apocalyptic number.

667646688062 is a deficient number, since it is larger than the sum of its proper divisors (333823344034).

667646688062 is a wasteful number, since it uses less digits than its factorization.

667646688062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333823344033.

The product of its (nonzero) digits is 167215104, while the sum is 65.

The spelling of 667646688062 in words is "six hundred sixty-seven billion, six hundred forty-six million, six hundred eighty-eight thousand, sixty-two".