1365009 has 4 divisors (see below), whose sum is σ = 1820016. Its totient is φ = 910004.

The previous prime is 1364971. The next prime is 1365011. The reversal of 1365009 is 9005631.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1365009 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 1365009.

It is not an unprimeable number, because it can be changed into a prime (1365019) 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, 227499 + ... + 227504.

It is an arithmetic number, because the mean of its divisors is an integer number (455004).

2^1365009 is an apocalyptic number.

It is an amenable number.

1365009 is a deficient number, since it is larger than the sum of its proper divisors (455007).

1365009 is an equidigital number, since it uses as much as digits as its factorization.

1365009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455006.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 1365009 is about 1168.3359961929. The cubic root of 1365009 is about 110.9290188187.

The spelling of 1365009 in words is "one million, three hundred sixty-five thousand, nine".