32645689 has 2 divisors, whose sum is σ = 32645690. Its totient is φ = 32645688.

The previous prime is 32645687. The next prime is 32645693. The reversal of 32645689 is 98654623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 3485689 = 5400^2 + 1867^2 .

It is an emirp because it is prime and its reverse (98654623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32645689 - 2¹ = 32645687 is a prime.

Together with 32645687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32645687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16322844 + 16322845.

It is an arithmetic number, because the mean of its divisors is an integer number (16322845).

Almost surely, 2^32645689 is an apocalyptic number.

It is an amenable number.

32645689 is a deficient number, since it is larger than the sum of its proper divisors (1).

32645689 is an equidigital number, since it uses as much as digits as its factorization.

32645689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 43.

The square root of 32645689 is about 5713.6406082287. The cubic root of 32645689 is about 319.6013558035.

The spelling of 32645689 in words is "thirty-two million, six hundred forty-five thousand, six hundred eighty-nine".