16319617 has 2 divisors, whose sum is σ = 16319618. Its totient is φ = 16319616.

The previous prime is 16319603. The next prime is 16319621. The reversal of 16319617 is 71691361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 3936256 = 3519^2 + 1984^2 .

It is a cyclic number.

It is not a de Polignac number, because 16319617 - 2¹⁵ = 16286849 is a prime.

It is not a weakly prime, because it can be changed into another prime (16319647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8159808 + 8159809.

It is an arithmetic number, because the mean of its divisors is an integer number (8159809).

Almost surely, 2^16319617 is an apocalyptic number.

It is an amenable number.

16319617 is a deficient number, since it is larger than the sum of its proper divisors (1).

16319617 is an equidigital number, since it uses as much as digits as its factorization.

16319617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 16319617 is about 4039.7545717531. The cubic root of 16319617 is about 253.6510439452.

The spelling of 16319617 in words is "sixteen million, three hundred nineteen thousand, six hundred seventeen".