1343857 has 8 divisors (see below), whose sum is σ = 1398600. Its totient is φ = 1290240.

The previous prime is 1343801. The next prime is 1343863. The reversal of 1343857 is 7583431.

It can be written as a sum of positive squares in 4 ways, for example, as 53361 + 1290496 = 231^2 + 1136^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343887) 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, 2769 + ... + 3217.

It is an arithmetic number, because the mean of its divisors is an integer number (174825).

2^1343857 is an apocalyptic number.

It is an amenable number.

1343857 is a deficient number, since it is larger than the sum of its proper divisors (54743).

1343857 is an equidigital number, since it uses as much as digits as its factorization.

1343857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its digits is 10080, while the sum is 31.

The square root of 1343857 is about 1159.2484634452. The cubic root of 1343857 is about 110.3530529665.

The spelling of 1343857 in words is "one million, three hundred forty-three thousand, eight hundred fifty-seven".