16230661 has 2 divisors, whose sum is σ = 16230662. Its totient is φ = 16230660.

The previous prime is 16230659. The next prime is 16230689. The reversal of 16230661 is 16603261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9728161 + 6502500 = 3119^2 + 2550^2 .

It is a cyclic number.

It is not a de Polignac number, because 16230661 - 2¹ = 16230659 is a prime.

Together with 16230659, 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 (16230061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8115330 + 8115331.

It is an arithmetic number, because the mean of its divisors is an integer number (8115331).

Almost surely, 2^16230661 is an apocalyptic number.

It is an amenable number.

16230661 is a deficient number, since it is larger than the sum of its proper divisors (1).

16230661 is an equidigital number, since it uses as much as digits as its factorization.

16230661 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 16230661 is about 4028.7294523212. The cubic root of 16230661 is about 253.1893316343.

The spelling of 16230661 in words is "sixteen million, two hundred thirty thousand, six hundred sixty-one".