813347 has 4 divisors (see below), whose sum is σ = 839616. Its totient is φ = 787080.

The previous prime is 813343. The next prime is 813361. The reversal of 813347 is 743318.

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

It is a cyclic number.

It is not a de Polignac number, because 813347 - 2² = 813343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (813343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13088 + ... + 13149.

It is an arithmetic number, because the mean of its divisors is an integer number (209904).

813347 is a Friedman number, since it can be written as 31*(4*3^8-7), using all its digits and the basic arithmetic operations.

2⁸¹³³⁴⁷ is an apocalyptic number.

813347 is a deficient number, since it is larger than the sum of its proper divisors (26269).

813347 is a wasteful number, since it uses less digits than its factorization.

813347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26268.

The product of its digits is 2016, while the sum is 26.

The square root of 813347 is about 901.8575275508. The cubic root of 813347 is about 93.3451926540.

The spelling of 813347 in words is "eight hundred thirteen thousand, three hundred forty-seven".