6835420136 has 8 divisors (see below), whose sum is σ = 12816412770. Its totient is φ = 3417710064.

The previous prime is 6835420121. The next prime is 6835420157. The reversal of 6835420136 is 6310245386.

It can be written as a sum of positive squares in only one way, i.e., 6788771236 + 46648900 = 82394^2 + 6830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 6835420136.

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 as a sum of consecutive naturals, namely, 427213751 + ... + 427213766.

Almost surely, 2^6835420136 is an apocalyptic number.

It is an amenable number.

6835420136 is a deficient number, since it is larger than the sum of its proper divisors (5980992634).

6835420136 is a wasteful number, since it uses less digits than its factorization.

6835420136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854427523 (or 854427519 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The square root of 6835420136 is about 82676.5996881826. The cubic root of 6835420136 is about 1897.8202274542.

The spelling of 6835420136 in words is "six billion, eight hundred thirty-five million, four hundred twenty thousand, one hundred thirty-six".