16776961 has 2 divisors, whose sum is σ = 16776962. Its totient is φ = 16776960.

The previous prime is 16776941. The next prime is 16776967. The reversal of 16776961 is 16967761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 1838736 = 3865^2 + 1356^2 .

It is a cyclic number.

It is not a de Polignac number, because 16776961 - 2⁷ = 16776833 is a prime.

It is not a weakly prime, because it can be changed into another prime (16776967) 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, 8388480 + 8388481.

It is an arithmetic number, because the mean of its divisors is an integer number (8388481).

Almost surely, 2^16776961 is an apocalyptic number.

It is an amenable number.

16776961 is a deficient number, since it is larger than the sum of its proper divisors (1).

16776961 is an equidigital number, since it uses as much as digits as its factorization.

16776961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 43.

The square root of 16776961 is about 4095.9688719520. The cubic root of 16776961 is about 255.9987029964.

The spelling of 16776961 in words is "sixteen million, seven hundred seventy-six thousand, nine hundred sixty-one".