6445065606 has 32 divisors (see below), whose sum is σ = 14869267200. Its totient is φ = 1824236256.

The previous prime is 6445065581. The next prime is 6445065607. The reversal of 6445065606 is 6065605446.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445065607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712581 + ... + 721568.

It is an arithmetic number, because the mean of its divisors is an integer number (464664600).

Almost surely, 2^6445065606 is an apocalyptic number.

6445065606 is an abundant number, since it is smaller than the sum of its proper divisors (8424201594).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6445065606 is a wasteful number, since it uses less digits than its factorization.

6445065606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434268.

The product of its (nonzero) digits is 518400, while the sum is 42.

The square root of 6445065606 is about 80281.1659481849. The cubic root of 6445065606 is about 1860.9831783251.

The spelling of 6445065606 in words is "six billion, four hundred forty-five million, sixty-five thousand, six hundred six".