6434557 has 4 divisors (see below), whose sum is σ = 6441820. Its totient is φ = 6427296.

The previous prime is 6434537. The next prime is 6434567. The reversal of 6434557 is 7554346.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7554346 = 2 ⋅3777173.

It can be written as a sum of positive squares in 2 ways, for example, as 5044516 + 1390041 = 2246^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 6434557 - 2⁷ = 6434429 is a prime.

It is a Duffinian number.

6434557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6434537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082 + ... + 4147.

It is an arithmetic number, because the mean of its divisors is an integer number (1610455).

Almost surely, 2^6434557 is an apocalyptic number.

It is an amenable number.

6434557 is a deficient number, since it is larger than the sum of its proper divisors (7263).

6434557 is a wasteful number, since it uses less digits than its factorization.

6434557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its digits is 50400, while the sum is 34.

The square root of 6434557 is about 2536.6428601599. The cubic root of 6434557 is about 185.9971190828.

The spelling of 6434557 in words is "six million, four hundred thirty-four thousand, five hundred fifty-seven".