6720057355 has 16 divisors (see below), whose sum is σ = 8963154144. Its totient is φ = 4795098880.

The previous prime is 6720057349. The next prime is 6720057359. The reversal of 6720057355 is 5537500276.

It is not a de Polignac number, because 6720057355 - 2¹⁵ = 6720024587 is a prime.

It is a super-3 number, since 3×6720057355³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6720057359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1149754 + ... + 1155583.

It is an arithmetic number, because the mean of its divisors is an integer number (560197134).

Almost surely, 2^6720057355 is an apocalyptic number.

6720057355 is a deficient number, since it is larger than the sum of its proper divisors (2243096789).

6720057355 is a wasteful number, since it uses less digits than its factorization.

6720057355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2305406.

The product of its (nonzero) digits is 220500, while the sum is 40.

The square root of 6720057355 is about 81975.9559566096. The cubic root of 6720057355 is about 1887.0829608284.

The spelling of 6720057355 in words is "six billion, seven hundred twenty million, fifty-seven thousand, three hundred fifty-five".