6620730753 has 32 divisors (see below), whose sum is σ = 11158448896. Its totient is φ = 3397863168.

The previous prime is 6620730731. The next prime is 6620730793. The reversal of 6620730753 is 3570370266.

It is not a de Polignac number, because 6620730753 - 2¹³ = 6620722561 is a prime.

It is a super-3 number, since 3×6620730753³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (6620730713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 317626 + ... + 337827.

It is an arithmetic number, because the mean of its divisors is an integer number (348701528).

Almost surely, 2^6620730753 is an apocalyptic number.

It is an amenable number.

6620730753 is a deficient number, since it is larger than the sum of its proper divisors (4537718143).

6620730753 is a wasteful number, since it uses less digits than its factorization.

6620730753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655513.

The product of its (nonzero) digits is 158760, while the sum is 39.

The square root of 6620730753 is about 81367.8729782216. The cubic root of 6620730753 is about 1877.7393561636.

The spelling of 6620730753 in words is "six billion, six hundred twenty million, seven hundred thirty thousand, seven hundred fifty-three".