10261609 has 2 divisors, whose sum is σ = 10261610. Its totient is φ = 10261608.

The previous prime is 10261597. The next prime is 10261613. The reversal of 10261609 is 90616201.

10261609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 21609 = 3200^2 + 147^2 .

It is a cyclic number.

It is not a de Polignac number, because 10261609 - 2¹³ = 10253417 is a prime.

It is not a weakly prime, because it can be changed into another prime (10261619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5130804 + 5130805.

It is an arithmetic number, because the mean of its divisors is an integer number (5130805).

Almost surely, 2^10261609 is an apocalyptic number.

It is an amenable number.

10261609 is a deficient number, since it is larger than the sum of its proper divisors (1).

10261609 is an equidigital number, since it uses as much as digits as its factorization.

10261609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10261609 is about 3203.3746268584. The cubic root of 10261609 is about 217.3060516167.

It can be divided in two parts, 1026160 and 9, that added together give a square (1026169 = 1013²).

The spelling of 10261609 in words is "ten million, two hundred sixty-one thousand, six hundred nine".