6403234 has 4 divisors (see below), whose sum is σ = 9604854. Its totient is φ = 3201616.

The previous prime is 6403219. The next prime is 6403273. The reversal of 6403234 is 4323046.

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

It can be written as a sum of positive squares in only one way, i.e., 4853209 + 1550025 = 2203^2 + 1245^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 6⁶ + 4² + 0 + 3⁶ + 2¹⁹ + 3¹⁴ + 4¹⁰ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1600807 + ... + 1600810.

Almost surely, 2^6403234 is an apocalyptic number.

6403234 is a deficient number, since it is larger than the sum of its proper divisors (3201620).

6403234 is a wasteful number, since it uses less digits than its factorization.

6403234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201619.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 6403234 is about 2530.4612227813. The cubic root of 6403234 is about 185.6948207833.

The spelling of 6403234 in words is "six million, four hundred three thousand, two hundred thirty-four".