6438734 has 8 divisors (see below), whose sum is σ = 9882840. Its totient is φ = 3144456.

The previous prime is 6438721. The next prime is 6438749. The reversal of 6438734 is 4378346.

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

It is a junction number, because it is equal to n+sod(n) for n = 6438694 and 6438703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37349 + ... + 37520.

It is an arithmetic number, because the mean of its divisors is an integer number (1235355).

Almost surely, 2^6438734 is an apocalyptic number.

6438734 is a deficient number, since it is larger than the sum of its proper divisors (3444106).

6438734 is a wasteful number, since it uses less digits than its factorization.

6438734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74914.

The product of its digits is 48384, while the sum is 35.

The square root of 6438734 is about 2537.4660588863. The cubic root of 6438734 is about 186.0373571244.

The spelling of 6438734 in words is "six million, four hundred thirty-eight thousand, seven hundred thirty-four".