1312564 has 24 divisors (see below), whose sum is σ = 2616768. Its totient is φ = 570240.

The previous prime is 1312561. The next prime is 1312567. The reversal of 1312564 is 4652131.

It is an interprime number because it is at equal distance from previous prime (1312561) and next prime (1312567).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312561) 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, 364 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (109032).

2^1312564 is an apocalyptic number.

It is an amenable number.

1312564 is a deficient number, since it is larger than the sum of its proper divisors (1304204).

1312564 is a wasteful number, since it uses less digits than its factorization.

1312564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335 (or 1333 counting only the distinct ones).

The product of its digits is 720, while the sum is 22.

The square root of 1312564 is about 1145.6718552884. The cubic root of 1312564 is about 109.4897580824.

Adding to 1312564 its reverse (4652131), we get a palindrome (5964695).

The spelling of 1312564 in words is "one million, three hundred twelve thousand, five hundred sixty-four".