1304656 has 20 divisors (see below), whose sum is σ = 2564692. Its totient is φ = 642816.

The previous prime is 1304627. The next prime is 1304659. The reversal of 1304656 is 6564031.

It can be written as a sum of positive squares in 2 ways, for example, as 336400 + 968256 = 580^2 + 984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1304656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610 + ... + 1726.

2^1304656 is an apocalyptic number.

1304656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1304656 is a deficient number, since it is larger than the sum of its proper divisors (1260036).

1304656 is a wasteful number, since it uses less digits than its factorization.

1304656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1192 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1304656 is about 1142.2153912463. The cubic root of 1304656 is about 109.2694285817.

Adding to 1304656 its reverse (6564031), we get a palindrome (7868687).

The spelling of 1304656 in words is "one million, three hundred four thousand, six hundred fifty-six".