16654861 has 2 divisors, whose sum is σ = 16654862. Its totient is φ = 16654860.

The previous prime is 16654819. The next prime is 16654867. The reversal of 16654861 is 16845661.

16654861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9418761 + 7236100 = 3069^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 16654861 - 2¹⁷ = 16523789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16654861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16654867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8327430 + 8327431.

It is an arithmetic number, because the mean of its divisors is an integer number (8327431).

Almost surely, 2^16654861 is an apocalyptic number.

It is an amenable number.

16654861 is a deficient number, since it is larger than the sum of its proper divisors (1).

16654861 is an equidigital number, since it uses as much as digits as its factorization.

16654861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 16654861 is about 4081.0367555316. The cubic root of 16654861 is about 255.3761512603.

The spelling of 16654861 in words is "sixteen million, six hundred fifty-four thousand, eight hundred sixty-one".