1336609 has 4 divisors (see below), whose sum is σ = 1341616. Its totient is φ = 1331604.

The previous prime is 1336603. The next prime is 1336613. The reversal of 1336609 is 9066331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9066331 = 499 ⋅18169.

It is a cyclic number.

It is not a de Polignac number, because 1336609 - 2⁷ = 1336481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1336603) 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, 2079 + ... + 2644.

It is an arithmetic number, because the mean of its divisors is an integer number (335404).

2^1336609 is an apocalyptic number.

It is an amenable number.

1336609 is a deficient number, since it is larger than the sum of its proper divisors (5007).

1336609 is an equidigital number, since it uses as much as digits as its factorization.

1336609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 1336609 is about 1156.1180735548. The cubic root of 1336609 is about 110.1543013605.

It can be divided in two parts, 1 and 336609, that added together give a triangular number (336610 = T₈₂₀).

The spelling of 1336609 in words is "one million, three hundred thirty-six thousand, six hundred nine".