67683439656 has 48 divisors (see below), whose sum is σ = 209496362400. Its totient is φ = 19338125472.

The previous prime is 67683439639. The next prime is 67683439667. The reversal of 67683439656 is 65693438676.

It is a happy number.

67683439656 is a `hidden beast` number, since 6 + 76 + 83 + 439 + 6 + 56 = 666.

67683439656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 67683439593 and 67683439602.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67145766 + ... + 67146773.

It is an arithmetic number, because the mean of its divisors is an integer number (4364507550).

Almost surely, 2^67683439656 is an apocalyptic number.

It is an amenable number.

67683439656 is an abundant number, since it is smaller than the sum of its proper divisors (141812922744).

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

67683439656 is a wasteful number, since it uses less digits than its factorization.

67683439656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134292558 (or 134292551 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 63.

The spelling of 67683439656 in words is "sixty-seven billion, six hundred eighty-three million, four hundred thirty-nine thousand, six hundred fifty-six".