16066651 has 2 divisors, whose sum is σ = 16066652. Its totient is φ = 16066650.

The previous prime is 16066639. The next prime is 16066657. The reversal of 16066651 is 15666061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16066651 - 2⁵ = 16066619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16066657) 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, 8033325 + 8033326.

It is an arithmetic number, because the mean of its divisors is an integer number (8033326).

Almost surely, 2^16066651 is an apocalyptic number.

16066651 is a deficient number, since it is larger than the sum of its proper divisors (1).

16066651 is an equidigital number, since it uses as much as digits as its factorization.

16066651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 16066651 is about 4008.3227165487. The cubic root of 16066651 is about 252.3336210726. Note that the first 3 decimals are identical.

The spelling of 16066651 in words is "sixteen million, sixty-six thousand, six hundred fifty-one".