1313644 has 6 divisors (see below), whose sum is σ = 2298884. Its totient is φ = 656820.

The previous prime is 1313633. The next prime is 1313651. The reversal of 1313644 is 4463131.

It is a d-powerful number, because it can be written as 1 + 3⁶ + 1 + 3⁷ + 6 + 4⁹ + 4¹⁰ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164202 + ... + 164209.

2^1313644 is an apocalyptic number.

It is an amenable number.

1313644 is a deficient number, since it is larger than the sum of its proper divisors (985240).

1313644 is a wasteful number, since it uses less digits than its factorization.

1313644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328415 (or 328413 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 1313644 is about 1146.1430975232. The cubic root of 1313644 is about 109.5197798619.

Adding to 1313644 its reverse (4463131), we get a palindrome (5776775).

The spelling of 1313644 in words is "one million, three hundred thirteen thousand, six hundred forty-four".