1320069 has 4 divisors (see below), whose sum is σ = 1760096. Its totient is φ = 880044.

The previous prime is 1320061. The next prime is 1320091. The reversal of 1320069 is 9600231.

1320069 is nontrivially palindromic in base 2 and base 8.

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 not a de Polignac number, because 1320069 - 2³ = 1320061 is a prime.

It is a super-2 number, since 2×1320069² = 3485164329522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320061) 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, 220009 + ... + 220014.

It is an arithmetic number, because the mean of its divisors is an integer number (440024).

2^1320069 is an apocalyptic number.

It is an amenable number.

1320069 is a deficient number, since it is larger than the sum of its proper divisors (440027).

1320069 is an equidigital number, since it uses as much as digits as its factorization.

1320069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440026.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1320069 is about 1148.9425573109. The cubic root of 1320069 is about 109.6980423873.

The spelling of 1320069 in words is "one million, three hundred twenty thousand, sixty-nine".