1320967 has 4 divisors (see below), whose sum is σ = 1324800. Its totient is φ = 1317136.

The previous prime is 1320961. The next prime is 1320973. The reversal of 1320967 is 7690231.

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

It is an interprime number because it is at equal distance from previous prime (1320961) and next prime (1320973).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320961) 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, 1342 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (331200).

2^1320967 is an apocalyptic number.

1320967 is a deficient number, since it is larger than the sum of its proper divisors (3833).

1320967 is an equidigital number, since it uses as much as digits as its factorization.

1320967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1320967 is about 1149.3332849961. Note that the first 3 decimals coincide. The cubic root of 1320967 is about 109.7229114189.

The spelling of 1320967 in words is "one million, three hundred twenty thousand, nine hundred sixty-seven".