16324661 has 2 divisors, whose sum is σ = 16324662. Its totient is φ = 16324660.

The previous prime is 16324657. The next prime is 16324691. The reversal of 16324661 is 16642361.

It is a happy number.

16324661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11458225 + 4866436 = 3385^2 + 2206^2 .

It is an emirp because it is prime and its reverse (16642361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16324661 - 2² = 16324657 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16324691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8162330 + 8162331.

It is an arithmetic number, because the mean of its divisors is an integer number (8162331).

Almost surely, 2^16324661 is an apocalyptic number.

It is an amenable number.

16324661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16324661 is an equidigital number, since it uses as much as digits as its factorization.

16324661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 16324661 is about 4040.3788188733. The cubic root of 16324661 is about 253.6771737266.

The spelling of 16324661 in words is "sixteen million, three hundred twenty-four thousand, six hundred sixty-one".