1313656 has 16 divisors (see below), whose sum is σ = 2543040. Its totient is φ = 635520.

The previous prime is 1313651. The next prime is 1313657. The reversal of 1313656 is 6563131.

1313656 = 279² + 280² + ... + 294².

It is a self number, because there is not a number n which added to its sum of digits gives 1313656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313651) 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, 2401 + ... + 2896.

It is an arithmetic number, because the mean of its divisors is an integer number (158940).

2^1313656 is an apocalyptic number.

It is an amenable number.

1313656 is a deficient number, since it is larger than the sum of its proper divisors (1229384).

1313656 is a wasteful number, since it uses less digits than its factorization.

1313656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5334 (or 5330 counting only the distinct ones).

The product of its digits is 1620, while the sum is 25.

The square root of 1313656 is about 1146.1483324596. The cubic root of 1313656 is about 109.5201133448.

Adding to 1313656 its reverse (6563131), we get a palindrome (7876787).

It can be divided in two parts, 1313 and 656, that multiplied together give a triangular number (861328 = T₁₃₁₂).

The spelling of 1313656 in words is "one million, three hundred thirteen thousand, six hundred fifty-six".