623709884 has 48 divisors (see below), whose sum is σ = 1315614720. Its totient is φ = 252745920.

The previous prime is 623709871. The next prime is 623709913. The reversal of 623709884 is 488907326.

623709884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 423269 + ... + 424739.

It is an arithmetic number, because the mean of its divisors is an integer number (27408640).

Almost surely, 2^623709884 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 623709884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657807360).

623709884 is an abundant number, since it is smaller than the sum of its proper divisors (691904836).

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

623709884 is a wasteful number, since it uses less digits than its factorization.

623709884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298 (or 2296 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 623709884 is about 24974.1843510454. The cubic root of 623709884 is about 854.3992834764.

The spelling of 623709884 in words is "six hundred twenty-three million, seven hundred nine thousand, eight hundred eighty-four".