6438711 has 8 divisors (see below), whose sum is σ = 8614144. Its totient is φ = 4277880.

The previous prime is 6438697. The next prime is 6438721. The reversal of 6438711 is 1178346.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6438711 - 2⁶ = 6438647 is a prime.

It is a Duffinian number.

6438711 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2575 + ... + 4416.

It is an arithmetic number, because the mean of its divisors is an integer number (1076768).

Almost surely, 2^6438711 is an apocalyptic number.

6438711 is a deficient number, since it is larger than the sum of its proper divisors (2175433).

6438711 is a wasteful number, since it uses less digits than its factorization.

6438711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7301.

The product of its digits is 4032, while the sum is 30.

The square root of 6438711 is about 2537.4615268019. The cubic root of 6438711 is about 186.0371356076.

The spelling of 6438711 in words is "six million, four hundred thirty-eight thousand, seven hundred eleven".