6434 has 4 divisors (see below), whose sum is σ = 9654. Its totient is φ = 3216.

The previous prime is 6427. The next prime is 6449. The reversal of 6434 is 4346.

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., 4225 + 2209 = 65^2 + 47^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607 + ... + 1610.

2⁶⁴³⁴ is an apocalyptic number.

6434 is a deficient number, since it is larger than the sum of its proper divisors (3220).

6434 is a wasteful number, since it uses less digits than its factorization.

6434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219.

The product of its digits is 288, while the sum is 17.

The square root of 6434 is about 80.2122185206. The cubic root of 6434 is about 18.5991752053.

The spelling of 6434 in words is "six thousand, four hundred thirty-four".