623889987930 has 224 divisors, whose sum is σ = 1851292551168. Its totient is φ = 150052694400.

The previous prime is 623889987767. The next prime is 623889987997. The reversal of 623889987930 is 39789988326.

623889987930 is a `hidden beast` number, since 62 + 388 + 9 + 98 + 79 + 30 = 666.

623889987930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 10153500 + ... + 10214760.

Almost surely, 2^623889987930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623889987930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925646275584).

623889987930 is an abundant number, since it is smaller than the sum of its proper divisors (1227402563238).

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

623889987930 is a wasteful number, since it uses less digits than its factorization.

623889987930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61424 (or 61409 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 623889987930 in words is "six hundred twenty-three billion, eight hundred eighty-nine million, nine hundred eighty-seven thousand, nine hundred thirty".