1286965 has 24 divisors (see below), whose sum is σ = 1755648. Its totient is φ = 902880.

The previous prime is 1286959. The next prime is 1286969. The reversal of 1286965 is 5696821.

It is not a de Polignac number, because 1286965 - 2⁷ = 1286837 is a prime.

It is a super-2 number, since 2×1286965² = 3312557822450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1286969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41500 + ... + 41530.

It is an arithmetic number, because the mean of its divisors is an integer number (73152).

2^1286965 is an apocalyptic number.

It is an amenable number.

1286965 is a deficient number, since it is larger than the sum of its proper divisors (468683).

1286965 is a wasteful number, since it uses less digits than its factorization.

1286965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 78 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 1286965 is about 1134.4447981281. Note that the first 3 decimals coincide. The cubic root of 1286965 is about 108.7732851887.

The spelling of 1286965 in words is "one million, two hundred eighty-six thousand, nine hundred sixty-five".