3612509 has 2 divisors, whose sum is σ = 3612510. Its totient is φ = 3612508.

The previous prime is 3612503. The next prime is 3612529. The reversal of 3612509 is 9052163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2184484 + 1428025 = 1478^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 3612509 - 2⁴ = 3612493 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3612503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1806254 + 1806255.

It is an arithmetic number, because the mean of its divisors is an integer number (1806255).

Almost surely, 2^3612509 is an apocalyptic number.

It is an amenable number.

3612509 is a deficient number, since it is larger than the sum of its proper divisors (1).

3612509 is an equidigital number, since it uses as much as digits as its factorization.

3612509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 3612509 is about 1900.6601484747. The cubic root of 3612509 is about 153.4391954315.

The spelling of 3612509 in words is "three million, six hundred twelve thousand, five hundred nine".