6620830889 has 2 divisors, whose sum is σ = 6620830890. Its totient is φ = 6620830888.

The previous prime is 6620830831. The next prime is 6620830913. The reversal of 6620830889 is 9880380266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6285318400 + 335512489 = 79280^2 + 18317^2 .

It is a cyclic number.

It is not a de Polignac number, because 6620830889 - 2⁸ = 6620830633 is a prime.

It is a partition number, being equal to the number of ways a set of 132 identical objects can be partitioned into subset.

It is not a weakly prime, because it can be changed into another prime (6620830189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310415444 + 3310415445.

It is an arithmetic number, because the mean of its divisors is an integer number (3310415445).

Almost surely, 2^6620830889 is an apocalyptic number.

It is an amenable number.

6620830889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6620830889 is an equidigital number, since it uses as much as digits as its factorization.

6620830889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 6620830889 is about 81368.4883047485. The cubic root of 6620830889 is about 1877.7488228104.

The spelling of 6620830889 in words is "six billion, six hundred twenty million, eight hundred thirty thousand, eight hundred eighty-nine".