623220330 has 64 divisors (see below), whose sum is σ = 1581834240. Its totient is φ = 156707136.

The previous prime is 623220319. The next prime is 623220343. The reversal of 623220330 is 33022326.

It is a junction number, because it is equal to n+sod(n) for n = 623220297 and 623220306.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124659 + ... + 129561.

It is an arithmetic number, because the mean of its divisors is an integer number (24716160).

Almost surely, 2^623220330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623220330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790917120).

623220330 is an abundant number, since it is smaller than the sum of its proper divisors (958613910).

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

623220330 is a wasteful number, since it uses less digits than its factorization.

623220330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5155.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 623220330 is about 24964.3812260589. The cubic root of 623220330 is about 854.1756837544.

Adding to 623220330 its reverse (33022326), we get a palindrome (656242656).

It can be divided in two parts, 6232 and 20330, that added together give a palindrome (26562).

The spelling of 623220330 in words is "six hundred twenty-three million, two hundred twenty thousand, three hundred thirty".