67840677906 has 8 divisors (see below), whose sum is σ = 135681355824. Its totient is φ = 22613559300.

The previous prime is 67840677881. The next prime is 67840677937. The reversal of 67840677906 is 60977604876.

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

67840677906 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 67840677906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5653389820 + ... + 5653389831.

It is an arithmetic number, because the mean of its divisors is an integer number (16960169478).

Almost surely, 2^67840677906 is an apocalyptic number.

67840677906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67840677906 is a wasteful number, since it uses less digits than its factorization.

67840677906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11306779656.

The product of its (nonzero) digits is 21337344, while the sum is 60.

The spelling of 67840677906 in words is "sixty-seven billion, eight hundred forty million, six hundred seventy-seven thousand, nine hundred six".