1366765 has 8 divisors (see below), whose sum is σ = 1726560. Its totient is φ = 1035792.

The previous prime is 1366763. The next prime is 1366769. The reversal of 1366765 is 5676631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1366765 - 2¹ = 1366763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1366765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1366763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7099 + ... + 7288.

It is an arithmetic number, because the mean of its divisors is an integer number (215820).

2^1366765 is an apocalyptic number.

It is an amenable number.

1366765 is a deficient number, since it is larger than the sum of its proper divisors (359795).

1366765 is a wasteful number, since it uses less digits than its factorization.

1366765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411.

The product of its digits is 22680, while the sum is 34.

The square root of 1366765 is about 1169.0872508072. The cubic root of 1366765 is about 110.9765662189.

The spelling of 1366765 in words is "one million, three hundred sixty-six thousand, seven hundred sixty-five".