623111216 has 120 divisors (see below), whose sum is σ = 1555212960. Its totient is φ = 235496448.

The previous prime is 623111119. The next prime is 623111243. The reversal of 623111216 is 612111326.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 623111191 and 623111200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 769820 + ... + 770628.

It is an arithmetic number, because the mean of its divisors is an integer number (12960108).

Almost surely, 2^623111216 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 623111216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777606480).

623111216 is an abundant number, since it is smaller than the sum of its proper divisors (932101744).

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

623111216 is a wasteful number, since it uses less digits than its factorization.

623111216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 854 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

The square root of 623111216 is about 24962.1957367536. The cubic root of 623111216 is about 854.1258308848.

The spelling of 623111216 in words is "six hundred twenty-three million, one hundred eleven thousand, two hundred sixteen".