6343405 has 4 divisors (see below), whose sum is σ = 7612092. Its totient is φ = 5074720.

The previous prime is 6343399. The next prime is 6343409. The reversal of 6343405 is 5043436.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3617604 + 2725801 = 1902^2 + 1651^2 .

It is not a de Polignac number, because 6343405 - 2⁷ = 6343277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6343405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6343409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634336 + ... + 634345.

It is an arithmetic number, because the mean of its divisors is an integer number (1903023).

Almost surely, 2^6343405 is an apocalyptic number.

It is an amenable number.

6343405 is a deficient number, since it is larger than the sum of its proper divisors (1268687).

6343405 is a wasteful number, since it uses less digits than its factorization.

6343405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268686.

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

The square root of 6343405 is about 2518.6117207700. The cubic root of 6343405 is about 185.1146598682.

The spelling of 6343405 in words is "six million, three hundred forty-three thousand, four hundred five".