6620163361 has 4 divisors (see below), whose sum is σ = 7565900992. Its totient is φ = 5674425732.

The previous prime is 6620163349. The next prime is 6620163371. The reversal of 6620163361 is 1633610266.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6620163361 - 2⁷ = 6620163233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620163371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 472868805 + ... + 472868818.

It is an arithmetic number, because the mean of its divisors is an integer number (1891475248).

Almost surely, 2^6620163361 is an apocalyptic number.

It is an amenable number.

6620163361 is a deficient number, since it is larger than the sum of its proper divisors (945737631).

6620163361 is an equidigital number, since it uses as much as digits as its factorization.

6620163361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945737630.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 6620163361 is about 81364.3863185854. The cubic root of 6620163361 is about 1877.6857143142.

The spelling of 6620163361 in words is "six billion, six hundred twenty million, one hundred sixty-three thousand, three hundred sixty-one".