623808380 has 96 divisors (see below), whose sum is σ = 1494884160. Its totient is φ = 216760320.

The previous prime is 623808373. The next prime is 623808389. The reversal of 623808380 is 83808326.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623808389) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 972860 + ... + 973500.

It is an arithmetic number, because the mean of its divisors is an integer number (15571710).

Almost surely, 2^623808380 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 623808380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (747442080).

623808380 is an abundant number, since it is smaller than the sum of its proper divisors (871075780).

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

623808380 is a wasteful number, since it uses less digits than its factorization.

623808380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 877 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 623808380 is about 24976.1562294922. The cubic root of 623808380 is about 854.4442565664. Note that the first 3 decimals are identical.

The spelling of 623808380 in words is "six hundred twenty-three million, eight hundred eight thousand, three hundred eighty".