16302661 has 2 divisors, whose sum is σ = 16302662. Its totient is φ = 16302660.

The previous prime is 16302659. The next prime is 16302667. The reversal of 16302661 is 16620361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10850436 + 5452225 = 3294^2 + 2335^2 .

It is an emirp because it is prime and its reverse (16620361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16302661 - 2¹ = 16302659 is a prime.

Together with 16302659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16302667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8151330 + 8151331.

It is an arithmetic number, because the mean of its divisors is an integer number (8151331).

Almost surely, 2^16302661 is an apocalyptic number.

It is an amenable number.

16302661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16302661 is an equidigital number, since it uses as much as digits as its factorization.

16302661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16302661 is about 4037.6553840069. The cubic root of 16302661 is about 253.5631661169.

The spelling of 16302661 in words is "sixteen million, three hundred two thousand, six hundred sixty-one".