1315647 has 12 divisors (see below), whose sum is σ = 2012400. Its totient is φ = 825408.

The previous prime is 1315637. The next prime is 1315651. The reversal of 1315647 is 7465131.

1315647 is a `hidden beast` number, since 1 + 3 + 15 + 647 = 666.

It is not a de Polignac number, because 1315647 - 2⁷ = 1315519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4147 + ... + 4452.

It is an arithmetic number, because the mean of its divisors is an integer number (167700).

2^1315647 is an apocalyptic number.

1315647 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1315647 is a deficient number, since it is larger than the sum of its proper divisors (696753).

1315647 is a wasteful number, since it uses less digits than its factorization.

1315647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622 (or 8619 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 1315647 is about 1147.0165648324. The cubic root of 1315647 is about 109.5754156147.

It can be divided in two parts, 13156 and 47, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 1315647 in words is "one million, three hundred fifteen thousand, six hundred forty-seven".