6406743 has 16 divisors (see below), whose sum is σ = 10277120. Its totient is φ = 3468096.

The previous prime is 6406727. The next prime is 6406747. The reversal of 6406743 is 3476046.

It is not a de Polignac number, because 6406743 - 2⁴ = 6406727 is a prime.

6406743 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6406743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6406747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7630 + ... + 8427.

It is an arithmetic number, because the mean of its divisors is an integer number (642320).

Almost surely, 2^6406743 is an apocalyptic number.

6406743 is a deficient number, since it is larger than the sum of its proper divisors (3870377).

6406743 is a wasteful number, since it uses less digits than its factorization.

6406743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16086.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 6406743 is about 2531.1544796792. The cubic root of 6406743 is about 185.7287351113.

The spelling of 6406743 in words is "six million, four hundred six thousand, seven hundred forty-three".