6445770 has 32 divisors (see below), whose sum is σ = 15890688. Its totient is φ = 1672128.

The previous prime is 6445757. The next prime is 6445793. The reversal of 6445770 is 775446.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1794 + ... + 4013.

It is an arithmetic number, because the mean of its divisors is an integer number (496584).

Almost surely, 2^6445770 is an apocalyptic number.

6445770 is an abundant number, since it is smaller than the sum of its proper divisors (9444918).

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

6445770 is a wasteful number, since it uses less digits than its factorization.

6445770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 6445770 is about 2538.8521028213. The cubic root of 6445770 is about 186.1050972703.

The spelling of 6445770 in words is "six million, four hundred forty-five thousand, seven hundred seventy".