823630 has 16 divisors (see below), whose sum is σ = 1547424. Its totient is φ = 315040.

The previous prime is 823621. The next prime is 823637. The reversal of 823630 is 36328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823637) by changing a digit.

823630 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 7 ways as a sum of consecutive naturals, for example, 1561 + ... + 2020.

It is an arithmetic number, because the mean of its divisors is an integer number (96714).

2⁸²³⁶³⁰ is an apocalyptic number.

823630 is a deficient number, since it is larger than the sum of its proper divisors (723794).

823630 is a wasteful number, since it uses less digits than its factorization.

823630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 823630 is about 907.5406326992. The cubic root of 823630 is about 93.7369285479.

Adding to 823630 its reverse (36328), we get a palindrome (859958).

The spelling of 823630 in words is "eight hundred twenty-three thousand, six hundred thirty".