667420568607 has 8 divisors (see below), whose sum is σ = 958347483184. Its totient is φ = 410720349888.

The previous prime is 667420568587. The next prime is 667420568609. The reversal of 667420568607 is 706865024766.

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

It is not a de Polignac number, because 667420568607 - 2¹⁵ = 667420535839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667420568609) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8556673918 + ... + 8556673995.

It is an arithmetic number, because the mean of its divisors is an integer number (119793435398).

Almost surely, 2^667420568607 is an apocalyptic number.

667420568607 is a deficient number, since it is larger than the sum of its proper divisors (290926914577).

667420568607 is a wasteful number, since it uses less digits than its factorization.

667420568607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17113347929.

The product of its (nonzero) digits is 20321280, while the sum is 57.

The spelling of 667420568607 in words is "six hundred sixty-seven billion, four hundred twenty million, five hundred sixty-eight thousand, six hundred seven".