1227865 has 8 divisors (see below), whose sum is σ = 1507968. Its totient is φ = 959280.

The previous prime is 1227847. The next prime is 1227871. The reversal of 1227865 is 5687221.

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

It is not a de Polignac number, because 1227865 - 2⁵ = 1227833 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2641 + ... + 3070.

It is an arithmetic number, because the mean of its divisors is an integer number (188496).

2^1227865 is an apocalyptic number.

It is an amenable number.

1227865 is a deficient number, since it is larger than the sum of its proper divisors (280103).

1227865 is an equidigital number, since it uses as much as digits as its factorization.

1227865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759.

The product of its digits is 6720, while the sum is 31.

The square root of 1227865 is about 1108.0907002588. The cubic root of 1227865 is about 107.0820984615.

The spelling of 1227865 in words is "one million, two hundred twenty-seven thousand, eight hundred sixty-five".