16320769 has 2 divisors, whose sum is σ = 16320770. Its totient is φ = 16320768.

The previous prime is 16320763. The next prime is 16320781. The reversal of 16320769 is 96702361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12159169 + 4161600 = 3487^2 + 2040^2 .

It is a cyclic number.

It is not a de Polignac number, because 16320769 - 2⁷ = 16320641 is a prime.

It is a super-2 number, since 2×16320769² = 532735001502722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16320763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8160384 + 8160385.

It is an arithmetic number, because the mean of its divisors is an integer number (8160385).

Almost surely, 2^16320769 is an apocalyptic number.

It is an amenable number.

16320769 is a deficient number, since it is larger than the sum of its proper divisors (1).

16320769 is an equidigital number, since it uses as much as digits as its factorization.

16320769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 16320769 is about 4039.8971521562. The cubic root of 16320769 is about 253.6570122047.

The spelling of 16320769 in words is "sixteen million, three hundred twenty thousand, seven hundred sixty-nine".