32666609 has 2 divisors, whose sum is σ = 32666610. Its totient is φ = 32666608.

The previous prime is 32666581. The next prime is 32666629. The reversal of 32666609 is 90666623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29593600 + 3073009 = 5440^2 + 1753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32666609 is a prime.

It is not a weakly prime, because it can be changed into another prime (32666629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16333304 + 16333305.

It is an arithmetic number, because the mean of its divisors is an integer number (16333305).

Almost surely, 2^32666609 is an apocalyptic number.

It is an amenable number.

32666609 is a deficient number, since it is larger than the sum of its proper divisors (1).

32666609 is an equidigital number, since it uses as much as digits as its factorization.

32666609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 32666609 is about 5715.4710217094. The cubic root of 32666609 is about 319.6696101723.

The spelling of 32666609 in words is "thirty-two million, six hundred sixty-six thousand, six hundred nine".