6445227085 has 16 divisors (see below), whose sum is σ = 8933706432. Its totient is φ = 4411705600.

The previous prime is 6445227079. The next prime is 6445227097. The reversal of 6445227085 is 5807225446.

It is a happy number.

It is not a de Polignac number, because 6445227085 - 2⁵ = 6445227053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3445711 + ... + 3447580.

It is an arithmetic number, because the mean of its divisors is an integer number (558356652).

Almost surely, 2^6445227085 is an apocalyptic number.

It is an amenable number.

6445227085 is a deficient number, since it is larger than the sum of its proper divisors (2488479347).

6445227085 is a wasteful number, since it uses less digits than its factorization.

6445227085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893324.

The product of its (nonzero) digits is 537600, while the sum is 43.

The square root of 6445227085 is about 80282.1716509961. The cubic root of 6445227085 is about 1860.9987203026.

The spelling of 6445227085 in words is "six billion, four hundred forty-five million, two hundred twenty-seven thousand, eighty-five".