6420584290 has 16 divisors (see below), whose sum is σ = 11659328568. Its totient is φ = 2545505536.

The previous prime is 6420584279. The next prime is 6420584299. The reversal of 6420584290 is 924850246.

It can be written as a sum of positive squares in 4 ways, for example, as 940587561 + 5479996729 = 30669^2 + 74027^2 .

It is not an unprimeable number, because it can be changed into a prime (6420584299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2839837 + ... + 2842096.

Almost surely, 2^6420584290 is an apocalyptic number.

6420584290 is a deficient number, since it is larger than the sum of its proper divisors (5238744278).

6420584290 is a wasteful number, since it uses less digits than its factorization.

6420584290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5682053.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 6420584290 is about 80128.5485329667. The cubic root of 6420584290 is about 1858.6238992968.

The spelling of 6420584290 in words is "six billion, four hundred twenty million, five hundred eighty-four thousand, two hundred ninety".