623606620 has 72 divisors (see below), whose sum is σ = 1620700704. Its totient is φ = 197353728.

The previous prime is 623606611. The next prime is 623606653. The reversal of 623606620 is 26606326.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10482 + ... + 36838.

It is an arithmetic number, because the mean of its divisors is an integer number (22509732).

Almost surely, 2^623606620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623606620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810350352).

623606620 is an abundant number, since it is smaller than the sum of its proper divisors (997094084).

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

623606620 is a wasteful number, since it uses less digits than its factorization.

623606620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26399 (or 26384 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 623606620 is about 24972.1168505996. The cubic root of 623606620 is about 854.3521282421.

The spelling of 623606620 in words is "six hundred twenty-three million, six hundred six thousand, six hundred twenty".