16723361 has 2 divisors, whose sum is σ = 16723362. Its totient is φ = 16723360.

The previous prime is 16723349. The next prime is 16723397. The reversal of 16723361 is 16332761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12496225 + 4227136 = 3535^2 + 2056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16723361 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (16723331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8361680 + 8361681.

It is an arithmetic number, because the mean of its divisors is an integer number (8361681).

Almost surely, 2^16723361 is an apocalyptic number.

It is an amenable number.

16723361 is a deficient number, since it is larger than the sum of its proper divisors (1).

16723361 is an equidigital number, since it uses as much as digits as its factorization.

16723361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 16723361 is about 4089.4206191098. The cubic root of 16723361 is about 255.7257856853.

The spelling of 16723361 in words is "sixteen million, seven hundred twenty-three thousand, three hundred sixty-one".