6720156213 has 8 divisors (see below), whose sum is σ = 9093943008. Its totient is φ = 4413236784.

The previous prime is 6720156211. The next prime is 6720156259. The reversal of 6720156213 is 3126510276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6720156213 - 2¹ = 6720156211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6720156211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16716606 + ... + 16717007.

It is an arithmetic number, because the mean of its divisors is an integer number (1136742876).

Almost surely, 2^6720156213 is an apocalyptic number.

It is an amenable number.

6720156213 is a deficient number, since it is larger than the sum of its proper divisors (2373786795).

6720156213 is a wasteful number, since it uses less digits than its factorization.

6720156213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33433683.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 6720156213 is about 81976.5589238777. The cubic root of 6720156213 is about 1887.0922143373.

Adding to 6720156213 its reverse (3126510276), we get a palindrome (9846666489).

The spelling of 6720156213 in words is "six billion, seven hundred twenty million, one hundred fifty-six thousand, two hundred thirteen".