6445145 has 16 divisors (see below), whose sum is σ = 8926848. Its totient is φ = 4375680.

The previous prime is 6445099. The next prime is 6445147. The reversal of 6445145 is 5415446.

It is not a de Polignac number, because 6445145 - 2¹⁰ = 6444121 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6445147) 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, 2885 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (557928).

Almost surely, 2^6445145 is an apocalyptic number.

It is an amenable number.

6445145 is a deficient number, since it is larger than the sum of its proper divisors (2481703).

6445145 is a wasteful number, since it uses less digits than its factorization.

6445145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840.

The product of its digits is 9600, while the sum is 29.

The square root of 6445145 is about 2538.7290127148. The cubic root of 6445145 is about 186.0990819845.

The spelling of 6445145 in words is "six million, four hundred forty-five thousand, one hundred forty-five".