6420555083 has 2 divisors, whose sum is σ = 6420555084. Its totient is φ = 6420555082.

The previous prime is 6420555077. The next prime is 6420555103. The reversal of 6420555083 is 3805550246.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6420555083 - 2²⁴ = 6403777867 is a prime.

It is not a weakly prime, because it can be changed into another prime (6420555073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210277541 + 3210277542.

It is an arithmetic number, because the mean of its divisors is an integer number (3210277542).

Almost surely, 2^6420555083 is an apocalyptic number.

6420555083 is a deficient number, since it is larger than the sum of its proper divisors (1).

6420555083 is an equidigital number, since it uses as much as digits as its factorization.

6420555083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 6420555083 is about 80128.3662818605. The cubic root of 6420555083 is about 1858.6210810221.

The spelling of 6420555083 in words is "six billion, four hundred twenty million, five hundred fifty-five thousand, eighty-three".