6620712201 has 16 divisors (see below), whose sum is σ = 9863265600. Its totient is φ = 4389146784.

The previous prime is 6620712181. The next prime is 6620712223. The reversal of 6620712201 is 1022170266.

6620712201 is a `hidden beast` number, since 6 + 620 + 7 + 12 + 20 + 1 = 666.

It is not a de Polignac number, because 6620712201 - 2⁷ = 6620712073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (6620712701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680116 + ... + 689781.

It is an arithmetic number, because the mean of its divisors is an integer number (616454100).

Almost surely, 2^6620712201 is an apocalyptic number.

It is an amenable number.

6620712201 is a deficient number, since it is larger than the sum of its proper divisors (3242553399).

6620712201 is a wasteful number, since it uses less digits than its factorization.

6620712201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370085 (or 1370079 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 6620712201 is about 81367.7589773738. The cubic root of 6620712201 is about 1877.7376022860.

Adding to 6620712201 its reverse (1022170266), we get a palindrome (7642882467).

The spelling of 6620712201 in words is "six billion, six hundred twenty million, seven hundred twelve thousand, two hundred one".