6220521730 has 32 divisors (see below), whose sum is σ = 11382061824. Its totient is φ = 2447387136.

The previous prime is 6220521691. The next prime is 6220521761. The reversal of 6220521730 is 371250226.

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, 138439 + ... + 177781.

It is an arithmetic number, because the mean of its divisors is an integer number (355689432).

Almost surely, 2^6220521730 is an apocalyptic number.

6220521730 is a deficient number, since it is larger than the sum of its proper divisors (5161540094).

6220521730 is a wasteful number, since it uses less digits than its factorization.

6220521730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39610.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 6220521730 is about 78870.2842013391. The cubic root of 6220521730 is about 1839.1152143771.

Adding to 6220521730 its reverse (371250226), we get a palindrome (6591771956).

The spelling of 6220521730 in words is "six billion, two hundred twenty million, five hundred twenty-one thousand, seven hundred thirty".