1216833 has 4 divisors (see below), whose sum is σ = 1622448. Its totient is φ = 811220.

The previous prime is 1216823. The next prime is 1216841. The reversal of 1216833 is 3386121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1216833 - 2⁸ = 1216577 is a prime.

It is a D-number.

1216833 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1216823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202803 + ... + 202808.

It is an arithmetic number, because the mean of its divisors is an integer number (405612).

2^1216833 is an apocalyptic number.

It is an amenable number.

1216833 is a deficient number, since it is larger than the sum of its proper divisors (405615).

1216833 is an equidigital number, since it uses as much as digits as its factorization.

1216833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405614.

The product of its digits is 864, while the sum is 24.

The square root of 1216833 is about 1103.1015365777. The cubic root of 1216833 is about 106.7604329577.

The spelling of 1216833 in words is "one million, two hundred sixteen thousand, eight hundred thirty-three".