623663144 has 64 divisors (see below), whose sum is σ = 1330324800. Its totient is φ = 271724544.

The previous prime is 623663143. The next prime is 623663167. The reversal of 623663144 is 441366326.

It is not an unprimeable number, because it can be changed into a prime (623663141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1080584 + ... + 1081160.

It is an arithmetic number, because the mean of its divisors is an integer number (20786325).

Almost surely, 2^623663144 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 623663144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665162400).

623663144 is an abundant number, since it is smaller than the sum of its proper divisors (706661656).

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

623663144 is a wasteful number, since it uses less digits than its factorization.

623663144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1158 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 623663144 is about 24973.2485672169. The cubic root of 623663144 is about 854.3779404230.

The spelling of 623663144 in words is "six hundred twenty-three million, six hundred sixty-three thousand, one hundred forty-four".