667441266682 has 8 divisors (see below), whose sum is σ = 1001165387796. Its totient is φ = 333719470752.

The previous prime is 667441266647. The next prime is 667441266683. The reversal of 667441266682 is 286662144766.

It can be written as a sum of positive squares in 2 ways, for example, as 473893183201 + 193548083481 = 688399^2 + 439941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (667441266683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 710248 + ... + 1356220.

Almost surely, 2^667441266682 is an apocalyptic number.

667441266682 is a deficient number, since it is larger than the sum of its proper divisors (333724121114).

667441266682 is a wasteful number, since it uses less digits than its factorization.

667441266682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162592.

The product of its digits is 27869184, while the sum is 58.

The spelling of 667441266682 in words is "six hundred sixty-seven billion, four hundred forty-one million, two hundred sixty-six thousand, six hundred eighty-two".