6219145 has 8 divisors (see below), whose sum is σ = 7664904. Its totient is φ = 4840704.

The previous prime is 6219139. The next prime is 6219149. The reversal of 6219145 is 5419126.

It can be written as a sum of positive squares in 4 ways, for example, as 687241 + 5531904 = 829^2 + 2352^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6219145 - 2⁵ = 6219113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6219149) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16624 + ... + 16993.

It is an arithmetic number, because the mean of its divisors is an integer number (958113).

Almost surely, 2^6219145 is an apocalyptic number.

It is an amenable number.

6219145 is a deficient number, since it is larger than the sum of its proper divisors (1445759).

6219145 is a wasteful number, since it uses less digits than its factorization.

6219145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33659.

The product of its digits is 2160, while the sum is 28.

The square root of 6219145 is about 2493.8213648936. The cubic root of 6219145 is about 183.8979526300.

The spelling of 6219145 in words is "six million, two hundred nineteen thousand, one hundred forty-five".