1340865 has 24 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 704544.

The previous prime is 1340861. The next prime is 1340879. The reversal of 1340865 is 5680431.

It is not a de Polignac number, because 1340865 - 2² = 1340861 is a prime.

1340865 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3556 + ... + 3914.

It is an arithmetic number, because the mean of its divisors is an integer number (98280).

2^1340865 is an apocalyptic number.

1340865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340865 is a deficient number, since it is larger than the sum of its proper divisors (1017855).

1340865 is a wasteful number, since it uses less digits than its factorization.

1340865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1340865 is about 1157.9572530970. The cubic root of 1340865 is about 110.2710944258.

The spelling of 1340865 in words is "one million, three hundred forty thousand, eight hundred sixty-five".