1356847 has 4 divisors (see below), whose sum is σ = 1428280. Its totient is φ = 1285416.

The previous prime is 1356829. The next prime is 1356857. The reversal of 1356847 is 7486531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1356847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356857) 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 3 ways as a sum of consecutive naturals, for example, 35688 + ... + 35725.

It is an arithmetic number, because the mean of its divisors is an integer number (357070).

2^1356847 is an apocalyptic number.

1356847 is a deficient number, since it is larger than the sum of its proper divisors (71433).

1356847 is an equidigital number, since it uses as much as digits as its factorization.

1356847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71432.

The product of its digits is 20160, while the sum is 34.

The square root of 1356847 is about 1164.8377569430. The cubic root of 1356847 is about 110.7074785766.

The spelling of 1356847 in words is "one million, three hundred fifty-six thousand, eight hundred forty-seven".