820227 has 8 divisors (see below), whose sum is σ = 1098064. Its totient is φ = 544608.

The previous prime is 820223. The next prime is 820231. The reversal of 820227 is 722028.

It is an interprime number because it is at equal distance from previous prime (820223) and next prime (820231).

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

It is not a de Polignac number, because 820227 - 2² = 820223 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820223) 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, 753 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (137258).

2⁸²⁰²²⁷ is an apocalyptic number.

820227 is a deficient number, since it is larger than the sum of its proper divisors (277837).

820227 is a wasteful number, since it uses less digits than its factorization.

820227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 820227 is about 905.6638449226. The cubic root of 820227 is about 93.6076524169.

The spelling of 820227 in words is "eight hundred twenty thousand, two hundred twenty-seven".