820337 has 4 divisors (see below), whose sum is σ = 937536. Its totient is φ = 703140.

The previous prime is 820333. The next prime is 820343. The reversal of 820337 is 733028.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 820337 - 2² = 820333 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 820337.

It is not an unprimeable number, because it can be changed into a prime (820331) 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, 58589 + ... + 58602.

It is an arithmetic number, because the mean of its divisors is an integer number (234384).

2⁸²⁰³³⁷ is an apocalyptic number.

It is an amenable number.

820337 is a deficient number, since it is larger than the sum of its proper divisors (117199).

820337 is a wasteful number, since it uses less digits than its factorization.

820337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117198.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 820337 is about 905.7245718208. The cubic root of 820337 is about 93.6118367795.

The spelling of 820337 in words is "eight hundred twenty thousand, three hundred thirty-seven".