6445345570 has 8 divisors (see below), whose sum is σ = 11601622044. Its totient is φ = 2578138224.

The previous prime is 6445345559. The next prime is 6445345607. The reversal of 6445345570 is 755435446.

It can be written as a sum of positive squares in 2 ways, for example, as 5355751489 + 1089594081 = 73183^2 + 33009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322267269 + ... + 322267288.

Almost surely, 2^6445345570 is an apocalyptic number.

6445345570 is a deficient number, since it is larger than the sum of its proper divisors (5156276474).

6445345570 is a wasteful number, since it uses less digits than its factorization.

6445345570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644534564.

The product of its (nonzero) digits is 1008000, while the sum is 43.

The square root of 6445345570 is about 80282.9095760735. The cubic root of 6445345570 is about 1861.0101240426.

The spelling of 6445345570 in words is "six billion, four hundred forty-five million, three hundred forty-five thousand, five hundred seventy".