6445195 has 4 divisors (see below), whose sum is σ = 7734240. Its totient is φ = 5156152.

The previous prime is 6445189. The next prime is 6445213. The reversal of 6445195 is 5915446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6445195 is a prime.

6445195 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6445195.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644515 + ... + 644524.

It is an arithmetic number, because the mean of its divisors is an integer number (1933560).

Almost surely, 2^6445195 is an apocalyptic number.

6445195 is a deficient number, since it is larger than the sum of its proper divisors (1289045).

6445195 is a wasteful number, since it uses less digits than its factorization.

6445195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289044.

The product of its digits is 21600, while the sum is 34.

The square root of 6445195 is about 2538.7388601430. The cubic root of 6445195 is about 186.0995632217.

It can be divided in two parts, 64451 and 95, that added together give a palindrome (64546).

The spelling of 6445195 in words is "six million, four hundred forty-five thousand, one hundred ninety-five".