15797609 has 2 divisors, whose sum is σ = 15797610. Its totient is φ = 15797608.

The previous prime is 15797591. The next prime is 15797647. The reversal of 15797609 is 90679751.

15797609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10061584 + 5736025 = 3172^2 + 2395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15797609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 15797609.

It is not a weakly prime, because it can be changed into another prime (15797659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7898804 + 7898805.

It is an arithmetic number, because the mean of its divisors is an integer number (7898805).

Almost surely, 2^15797609 is an apocalyptic number.

It is an amenable number.

15797609 is a deficient number, since it is larger than the sum of its proper divisors (1).

15797609 is an equidigital number, since it uses as much as digits as its factorization.

15797609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 44.

The square root of 15797609 is about 3974.6206108256. The cubic root of 15797609 is about 250.9172121058.

The spelling of 15797609 in words is "fifteen million, seven hundred ninety-seven thousand, six hundred nine".