16730081 has 2 divisors, whose sum is σ = 16730082. Its totient is φ = 16730080.

The previous prime is 16730059. The next prime is 16730093. The reversal of 16730081 is 18003761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 3297856 = 3665^2 + 1816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16730081 is a prime.

It is a super-2 number, since 2×16730081² = 559791220533122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16730081.

It is not a weakly prime, because it can be changed into another prime (16730041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8365040 + 8365041.

It is an arithmetic number, because the mean of its divisors is an integer number (8365041).

Almost surely, 2^16730081 is an apocalyptic number.

It is an amenable number.

16730081 is a deficient number, since it is larger than the sum of its proper divisors (1).

16730081 is an equidigital number, since it uses as much as digits as its factorization.

16730081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 16730081 is about 4090.2421688697. The cubic root of 16730081 is about 255.7600341268.

The spelling of 16730081 in words is "sixteen million, seven hundred thirty thousand, eighty-one".