6434861 has 2 divisors, whose sum is σ = 6434862. Its totient is φ = 6434860.

The previous prime is 6434849. The next prime is 6434899. The reversal of 6434861 is 1684346.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6405961 + 28900 = 2531^2 + 170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6434861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6484861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3217430 + 3217431.

It is an arithmetic number, because the mean of its divisors is an integer number (3217431).

Almost surely, 2^6434861 is an apocalyptic number.

It is an amenable number.

6434861 is a deficient number, since it is larger than the sum of its proper divisors (1).

6434861 is an equidigital number, since it uses as much as digits as its factorization.

6434861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 6434861 is about 2536.7027811709. The cubic root of 6434861 is about 186.0000481751. Note that the first 4 decimals are identical.

The spelling of 6434861 in words is "six million, four hundred thirty-four thousand, eight hundred sixty-one".