820035 has 12 divisors (see below), whose sum is σ = 1421472. Its totient is φ = 437328.

The previous prime is 819991. The next prime is 820037. The reversal of 820035 is 530028.

It is not a de Polignac number, because 820035 - 2⁹ = 819523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (820037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9067 + ... + 9156.

It is an arithmetic number, because the mean of its divisors is an integer number (118456).

2⁸²⁰⁰³⁵ is an apocalyptic number.

820035 is a deficient number, since it is larger than the sum of its proper divisors (601437).

820035 is a wasteful number, since it uses less digits than its factorization.

820035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18234 (or 18231 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 820035 is about 905.5578391246. The cubic root of 820035 is about 93.6003479058.

The spelling of 820035 in words is "eight hundred twenty thousand, thirty-five".