6321620217 has 16 divisors (see below), whose sum is σ = 9305872128. Its totient is φ = 3785123280.

The previous prime is 6321620213. The next prime is 6321620267. The reversal of 6321620217 is 7120261236.

It is not a de Polignac number, because 6321620217 - 2² = 6321620213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6321620213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1151263 + ... + 1156740.

It is an arithmetic number, because the mean of its divisors is an integer number (581617008).

Almost surely, 2^6321620217 is an apocalyptic number.

It is an amenable number.

6321620217 is a deficient number, since it is larger than the sum of its proper divisors (2984251911).

6321620217 is a wasteful number, since it uses less digits than its factorization.

6321620217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2308100.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 6321620217 is about 79508.6172499560. The cubic root of 6321620217 is about 1849.0250735577.

The spelling of 6321620217 in words is "six billion, three hundred twenty-one million, six hundred twenty thousand, two hundred seventeen".