820354 has 8 divisors (see below), whose sum is σ = 1259280. Its totient is φ = 400596.

The previous prime is 820349. The next prime is 820361. The reversal of 820354 is 453028.

820354 is nontrivially palindromic in base 3.

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

It is a plaindrome in base 12.

It is a zygodrome in base 3.

It is an unprimeable number.

820354 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4684 + ... + 4855.

It is an arithmetic number, because the mean of its divisors is an integer number (157410).

2⁸²⁰³⁵⁴ is an apocalyptic number.

820354 is a deficient number, since it is larger than the sum of its proper divisors (438926).

820354 is a wasteful number, since it uses less digits than its factorization.

820354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9584.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 820354 is about 905.7339565237. The cubic root of 820354 is about 93.6124834204.

The spelling of 820354 in words is "eight hundred twenty thousand, three hundred fifty-four".