6434591 has 4 divisors (see below), whose sum is σ = 6440784. Its totient is φ = 6428400.

The previous prime is 6434579. The next prime is 6434621. The reversal of 6434591 is 1954346.

6434591 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6434591 - 2¹⁴ = 6418207 is a prime.

It is a super-2 number, since 2×6434591² = 82807922674562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434531) by changing a digit.

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, 1115 + ... + 3756.

It is an arithmetic number, because the mean of its divisors is an integer number (1610196).

Almost surely, 2^6434591 is an apocalyptic number.

6434591 is a deficient number, since it is larger than the sum of its proper divisors (6193).

6434591 is a wasteful number, since it uses less digits than its factorization.

6434591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192.

The product of its digits is 12960, while the sum is 32.

The square root of 6434591 is about 2536.6495619222. The cubic root of 6434591 is about 185.9974466833.

The spelling of 6434591 in words is "six million, four hundred thirty-four thousand, five hundred ninety-one".