6403145 has 16 divisors (see below), whose sum is σ = 8864640. Its totient is φ = 4349184.

The previous prime is 6403141. The next prime is 6403151. The reversal of 6403145 is 5413046.

It is a happy number.

It is not a de Polignac number, because 6403145 - 2² = 6403141 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6403145.

It is not an unprimeable number, because it can be changed into a prime (6403141) 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, 3146 + ... + 4764.

It is an arithmetic number, because the mean of its divisors is an integer number (554040).

Almost surely, 2^6403145 is an apocalyptic number.

It is an amenable number.

6403145 is a deficient number, since it is larger than the sum of its proper divisors (2461495).

6403145 is a wasteful number, since it uses less digits than its factorization.

6403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 6403145 is about 2530.4436369933. The cubic root of 6403145 is about 185.6939604411.

Subtracting from 6403145 its reverse (5413046), we obtain a palindrome (990099).

The spelling of 6403145 in words is "six million, four hundred three thousand, one hundred forty-five".