6720408236 has 48 divisors (see below), whose sum is σ = 12191606112. Its totient is φ = 3239308800.

The previous prime is 6720408221. The next prime is 6720408241. The reversal of 6720408236 is 6328040276.

It is a self number, because there is not a number n which added to its sum of digits gives 6720408236.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5432210 + ... + 5433446.

It is an arithmetic number, because the mean of its divisors is an integer number (253991794).

Almost surely, 2^6720408236 is an apocalyptic number.

It is an amenable number.

6720408236 is a deficient number, since it is larger than the sum of its proper divisors (5471197876).

6720408236 is a wasteful number, since it uses less digits than its factorization.

6720408236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650 (or 1648 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The square root of 6720408236 is about 81978.0960745003. The cubic root of 6720408236 is about 1887.1158042997.

The spelling of 6720408236 in words is "six billion, seven hundred twenty million, four hundred eight thousand, two hundred thirty-six".