1320064 has 16 divisors (see below), whose sum is σ = 2630070. Its totient is φ = 659968.

The previous prime is 1320061. The next prime is 1320091. The reversal of 1320064 is 4600231.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 153664 = 1080^2 + 392^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

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 (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5029 + ... + 5284.

2^1320064 is an apocalyptic number.

It is an amenable number.

1320064 is a deficient number, since it is larger than the sum of its proper divisors (1310006).

1320064 is an equidigital number, since it uses as much as digits as its factorization.

1320064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10327 (or 10315 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1320064 is about 1148.9403813950. The cubic root of 1320064 is about 109.6979038868.

Adding to 1320064 its reverse (4600231), we get a palindrome (5920295).

The spelling of 1320064 in words is "one million, three hundred twenty thousand, sixty-four".