6835221872 has 10 divisors (see below), whose sum is σ = 13243242408. Its totient is φ = 3417610928.

The previous prime is 6835221859. The next prime is 6835221881. The reversal of 6835221872 is 2781225386.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 213600668 + ... + 213600699.

Almost surely, 2^6835221872 is an apocalyptic number.

It is an amenable number.

6835221872 is a deficient number, since it is larger than the sum of its proper divisors (6408020536).

6835221872 is a wasteful number, since it uses less digits than its factorization.

6835221872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427201375 (or 427201369 counting only the distinct ones).

The product of its digits is 322560, while the sum is 44.

The square root of 6835221872 is about 82675.4006461414. The cubic root of 6835221872 is about 1897.8018782740.

The spelling of 6835221872 in words is "six billion, eight hundred thirty-five million, two hundred twenty-one thousand, eight hundred seventy-two".