16916761 has 2 divisors, whose sum is σ = 16916762. Its totient is φ = 16916760.

The previous prime is 16916747. The next prime is 16916777. The reversal of 16916761 is 16761961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16556761 + 360000 = 4069^2 + 600^2 .

It is an emirp because it is prime and its reverse (16761961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16916761 - 2⁵ = 16916729 is a prime.

It is a super-2 number, since 2×16916761² = 572353605462242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16916761.

It is not a weakly prime, because it can be changed into another prime (16916701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8458380 + 8458381.

It is an arithmetic number, because the mean of its divisors is an integer number (8458381).

Almost surely, 2^16916761 is an apocalyptic number.

It is an amenable number.

16916761 is a deficient number, since it is larger than the sum of its proper divisors (1).

16916761 is an equidigital number, since it uses as much as digits as its factorization.

16916761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 37.

The square root of 16916761 is about 4112.9990274737. Note that the first 3 decimals coincide. The cubic root of 16916761 is about 256.7078037923.

The spelling of 16916761 in words is "sixteen million, nine hundred sixteen thousand, seven hundred sixty-one".