16660351 has 2 divisors, whose sum is σ = 16660352. Its totient is φ = 16660350.

The previous prime is 16660337. The next prime is 16660403. The reversal of 16660351 is 15306661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16660351 - 2¹¹ = 16658303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16660331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8330175 + 8330176.

It is an arithmetic number, because the mean of its divisors is an integer number (8330176).

Almost surely, 2^16660351 is an apocalyptic number.

16660351 is a deficient number, since it is larger than the sum of its proper divisors (1).

16660351 is an equidigital number, since it uses as much as digits as its factorization.

16660351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 16660351 is about 4081.7093233105. The cubic root of 16660351 is about 255.4042083552.

The spelling of 16660351 in words is "sixteen million, six hundred sixty thousand, three hundred fifty-one".