32320643 has 2 divisors, whose sum is σ = 32320644. Its totient is φ = 32320642.

The previous prime is 32320601. The next prime is 32320663. The reversal of 32320643 is 34602323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32320643 - 2²² = 28126339 is a prime.

It is not a weakly prime, because it can be changed into another prime (32320663) 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 as a sum of consecutive naturals, namely, 16160321 + 16160322.

It is an arithmetic number, because the mean of its divisors is an integer number (16160322).

Almost surely, 2^32320643 is an apocalyptic number.

32320643 is a deficient number, since it is larger than the sum of its proper divisors (1).

32320643 is an equidigital number, since it uses as much as digits as its factorization.

32320643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 32320643 is about 5685.1247127921. The cubic root of 32320643 is about 318.5370820543.

Adding to 32320643 its reverse (34602323), we get a palindrome (66922966).

The spelling of 32320643 in words is "thirty-two million, three hundred twenty thousand, six hundred forty-three".