1220467 has 4 divisors (see below), whose sum is σ = 1226800. Its totient is φ = 1214136.

The previous prime is 1220437. The next prime is 1220489. The reversal of 1220467 is 7640221.

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 1220467 - 2¹⁵ = 1187699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220437) 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, 2868 + ... + 3265.

It is an arithmetic number, because the mean of its divisors is an integer number (306700).

2^1220467 is an apocalyptic number.

1220467 is a deficient number, since it is larger than the sum of its proper divisors (6333).

1220467 is an equidigital number, since it uses as much as digits as its factorization.

1220467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1220467 is about 1104.7474824592. The cubic root of 1220467 is about 106.8666052479.

Adding to 1220467 its reverse (7640221), we get a palindrome (8860688).

The spelling of 1220467 in words is "one million, two hundred twenty thousand, four hundred sixty-seven".