1216367 has 4 divisors (see below), whose sum is σ = 1287936. Its totient is φ = 1144800.

The previous prime is 1216351. The next prime is 1216373. The reversal of 1216367 is 7636121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1216367 - 2⁴ = 1216351 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35759 + ... + 35792.

It is an arithmetic number, because the mean of its divisors is an integer number (321984).

2^1216367 is an apocalyptic number.

1216367 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1216367 is a deficient number, since it is larger than the sum of its proper divisors (71569).

1216367 is an equidigital number, since it uses as much as digits as its factorization.

1216367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71568.

The product of its digits is 1512, while the sum is 26.

The square root of 1216367 is about 1102.8902937283. The cubic root of 1216367 is about 106.7468028447.

The spelling of 1216367 in words is "one million, two hundred sixteen thousand, three hundred sixty-seven".