667670382643 has 8 divisors (see below), whose sum is σ = 745306474176. Its totient is φ = 592857421800.

The previous prime is 667670382629. The next prime is 667670382653. The reversal of 667670382643 is 346283076766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667670382643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667670382653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705782173 + ... + 705783118.

It is an arithmetic number, because the mean of its divisors is an integer number (93163309272).

Almost surely, 2^667670382643 is an apocalyptic number.

667670382643 is a deficient number, since it is larger than the sum of its proper divisors (77636091533).

667670382643 is a wasteful number, since it uses less digits than its factorization.

667670382643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411565345.

The product of its (nonzero) digits is 36578304, while the sum is 58.

The spelling of 667670382643 in words is "six hundred sixty-seven billion, six hundred seventy million, three hundred eighty-two thousand, six hundred forty-three".