16006651 has 2 divisors, whose sum is σ = 16006652. Its totient is φ = 16006650.

The previous prime is 16006631. The next prime is 16006657. The reversal of 16006651 is 15660061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16006651 - 2⁹ = 16006139 is a prime.

It is a super-3 number, since 3×16006651³ (a number of 23 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (16006657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8003325 + 8003326.

It is an arithmetic number, because the mean of its divisors is an integer number (8003326).

Almost surely, 2^16006651 is an apocalyptic number.

16006651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16006651 is an equidigital number, since it uses as much as digits as its factorization.

16006651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 16006651 is about 4000.8312886199. The cubic root of 16006651 is about 252.0191207042.

The spelling of 16006651 in words is "sixteen million, six thousand, six hundred fifty-one".