16779361 has 2 divisors, whose sum is σ = 16779362. Its totient is φ = 16779360.

The previous prime is 16779341. The next prime is 16779377. The reversal of 16779361 is 16397761.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15840400 + 938961 = 3980^2 + 969^2 .

It is an emirp because it is prime and its reverse (16397761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16779361 - 2¹³ = 16771169 is a prime.

It is not a weakly prime, because it can be changed into another prime (16779311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8389680 + 8389681.

It is an arithmetic number, because the mean of its divisors is an integer number (8389681).

Almost surely, 2^16779361 is an apocalyptic number.

It is an amenable number.

16779361 is a deficient number, since it is larger than the sum of its proper divisors (1).

16779361 is an equidigital number, since it uses as much as digits as its factorization.

16779361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47628, while the sum is 40.

The square root of 16779361 is about 4096.2618324516. The cubic root of 16779361 is about 256.0109095693.

The spelling of 16779361 in words is "sixteen million, seven hundred seventy-nine thousand, three hundred sixty-one".