32640343 has 2 divisors, whose sum is σ = 32640344. Its totient is φ = 32640342.

The previous prime is 32640319. The next prime is 32640359. The reversal of 32640343 is 34304623.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32640343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32640373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16320171 + 16320172.

It is an arithmetic number, because the mean of its divisors is an integer number (16320172).

Almost surely, 2^32640343 is an apocalyptic number.

32640343 is a deficient number, since it is larger than the sum of its proper divisors (1).

32640343 is an equidigital number, since it uses as much as digits as its factorization.

32640343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 32640343 is about 5713.1727612597. The cubic root of 32640343 is about 319.5839090678.

Adding to 32640343 its reverse (34304623), we get a palindrome (66944966).

The spelling of 32640343 in words is "thirty-two million, six hundred forty thousand, three hundred forty-three".