7261609 has 4 divisors (see below), whose sum is σ = 7275204. Its totient is φ = 7248016.

The previous prime is 7261607. The next prime is 7261613. The reversal of 7261609 is 9061627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2544025 + 4717584 = 1595^2 + 2172^2 .

It is a cyclic number.

It is not a de Polignac number, because 7261609 - 2¹ = 7261607 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7261607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5962 + ... + 7075.

It is an arithmetic number, because the mean of its divisors is an integer number (1818801).

Almost surely, 2^7261609 is an apocalyptic number.

It is an amenable number.

7261609 is a deficient number, since it is larger than the sum of its proper divisors (13595).

7261609 is a wasteful number, since it uses less digits than its factorization.

7261609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13594.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 7261609 is about 2694.7372784745. The cubic root of 7261609 is about 193.6470804066.

The spelling of 7261609 in words is "seven million, two hundred sixty-one thousand, six hundred nine".