6403345 has 32 divisors (see below), whose sum is σ = 8870400. Its totient is φ = 4402944.

The previous prime is 6403343. The next prime is 6403351. The reversal of 6403345 is 5433046.

6403345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6403345 - 2¹ = 6403343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6403343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81016 + ... + 81094.

It is an arithmetic number, because the mean of its divisors is an integer number (277200).

Almost surely, 2^6403345 is an apocalyptic number.

6403345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6403345 is a deficient number, since it is larger than the sum of its proper divisors (2467055).

6403345 is a wasteful number, since it uses less digits than its factorization.

6403345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 6403345 is about 2530.4831554468. The cubic root of 6403345 is about 185.6958937830.

Subtracting from 6403345 its reverse (5433046), we obtain a cube (970299 = 99³).

The spelling of 6403345 in words is "six million, four hundred three thousand, three hundred forty-five".