6720216340 has 48 divisors (see below), whose sum is σ = 14195865600. Its totient is φ = 2672241152.

The previous prime is 6720216329. The next prime is 6720216401. The reversal of 6720216340 is 436120276.

It is a super-2 number, since 2×6720216340² = 90322615312805991200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4669341 + ... + 4670779.

It is an arithmetic number, because the mean of its divisors is an integer number (295747200).

Almost surely, 2^6720216340 is an apocalyptic number.

It is an amenable number.

6720216340 is an abundant number, since it is smaller than the sum of its proper divisors (7475649260).

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

6720216340 is a wasteful number, since it uses less digits than its factorization.

6720216340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2664 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 6720216340 is about 81976.9256559430. The cubic root of 6720216340 is about 1887.0978424235.

The spelling of 6720216340 in words is "six billion, seven hundred twenty million, two hundred sixteen thousand, three hundred forty".