6431653 has 2 divisors, whose sum is σ = 6431654. Its totient is φ = 6431652.

The previous prime is 6431641. The next prime is 6431681. The reversal of 6431653 is 3561346.

It is an a-pointer prime, because the next prime (6431681) can be obtained adding 6431653 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5303809 + 1127844 = 2303^2 + 1062^2 .

It is a cyclic number.

It is not a de Polignac number, because 6431653 - 2⁹ = 6431141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6431683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3215826 + 3215827.

It is an arithmetic number, because the mean of its divisors is an integer number (3215827).

Almost surely, 2^6431653 is an apocalyptic number.

It is an amenable number.

6431653 is a deficient number, since it is larger than the sum of its proper divisors (1).

6431653 is an equidigital number, since it uses as much as digits as its factorization.

6431653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 28.

The square root of 6431653 is about 2536.0703854586. The cubic root of 6431653 is about 185.9691338923.

Adding to 6431653 its reverse (3561346), we get a palindrome (9992999).

The spelling of 6431653 in words is "six million, four hundred thirty-one thousand, six hundred fifty-three".