16279691 has 2 divisors, whose sum is σ = 16279692. Its totient is φ = 16279690.

The previous prime is 16279651. The next prime is 16279709. The reversal of 16279691 is 19697261.

16279691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16279691 - 2¹⁴ = 16263307 is a prime.

It is not a weakly prime, because it can be changed into another prime (16279621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8139845 + 8139846.

It is an arithmetic number, because the mean of its divisors is an integer number (8139846).

Almost surely, 2^16279691 is an apocalyptic number.

16279691 is a deficient number, since it is larger than the sum of its proper divisors (1).

16279691 is an equidigital number, since it uses as much as digits as its factorization.

16279691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 41.

The square root of 16279691 is about 4034.8099087813. The cubic root of 16279691 is about 253.4440223052. Note that the first 3 decimals are identical.

The spelling of 16279691 in words is "sixteen million, two hundred seventy-nine thousand, six hundred ninety-one".