1312655 has 8 divisors (see below), whose sum is σ = 1667952. Its totient is φ = 988288.

The previous prime is 1312637. The next prime is 1312657. The reversal of 1312655 is 5562131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312655 - 2¹⁶ = 1247119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7637 + ... + 7806.

It is an arithmetic number, because the mean of its divisors is an integer number (208494).

2^1312655 is an apocalyptic number.

1312655 is a deficient number, since it is larger than the sum of its proper divisors (355297).

1312655 is a wasteful number, since it uses less digits than its factorization.

1312655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15465.

The product of its digits is 900, while the sum is 23.

The square root of 1312655 is about 1145.7115692878. The cubic root of 1312655 is about 109.4922883305.

Adding to 1312655 its reverse (5562131), we get a palindrome (6874786).

The spelling of 1312655 in words is "one million, three hundred twelve thousand, six hundred fifty-five".