822630 has 32 divisors (see below), whose sum is σ = 2091744. Its totient is φ = 206336.

The previous prime is 822611. The next prime is 822631. The reversal of 822630 is 36228.

822630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 822597 and 822606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822631) by changing a digit.

822630 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 15 ways as a sum of consecutive naturals, for example, 297 + ... + 1316.

It is an arithmetic number, because the mean of its divisors is an integer number (65367).

2⁸²²⁶³⁰ is an apocalyptic number.

822630 is an abundant number, since it is smaller than the sum of its proper divisors (1269114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

822630 is a wasteful number, since it uses less digits than its factorization.

822630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 822630 is about 906.9895258491. The cubic root of 822630 is about 93.6989766801.

Adding to 822630 its reverse (36228), we get a palindrome (858858).

It can be divided in two parts, 8226 and 30, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 822630 in words is "eight hundred twenty-two thousand, six hundred thirty".