1270865 has 16 divisors (see below), whose sum is σ = 1634688. Its totient is φ = 946176.

The previous prime is 1270861. The next prime is 1270879. The reversal of 1270865 is 5680721.

It is a cyclic number.

It is not a de Polignac number, because 1270865 - 2² = 1270861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4817 + ... + 5073.

It is an arithmetic number, because the mean of its divisors is an integer number (102168).

2^1270865 is an apocalyptic number.

It is an amenable number.

1270865 is a deficient number, since it is larger than the sum of its proper divisors (363823).

1270865 is a wasteful number, since it uses less digits than its factorization.

1270865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1270865 is about 1127.3264833224. The cubic root of 1270865 is about 108.3177939579.

The spelling of 1270865 in words is "one million, two hundred seventy thousand, eight hundred sixty-five".